diff options
Diffstat (limited to 'pyspecs')
| -rw-r--r-- | pyspecs/__init__.py | 0 | ||||
| -rw-r--r-- | pyspecs/draw_graph_from_json.py | 145 | ||||
| -rw-r--r-- | pyspecs/pyspecs_example.ipynb | 682 | ||||
| -rw-r--r-- | pyspecs/specs.py | 236 | ||||
| -rw-r--r-- | pyspecs/specsparse.py | 301 |
5 files changed, 1364 insertions, 0 deletions
diff --git a/pyspecs/__init__.py b/pyspecs/__init__.py new file mode 100644 index 0000000..e69de29 --- /dev/null +++ b/pyspecs/__init__.py diff --git a/pyspecs/draw_graph_from_json.py b/pyspecs/draw_graph_from_json.py new file mode 100644 index 0000000..78a3c64 --- /dev/null +++ b/pyspecs/draw_graph_from_json.py @@ -0,0 +1,145 @@ +import sys +import json +import html +import graphviz + +def shorten(s, length=8): + if type(s) == list: + return "[...]" + s = str(s) + if len(s) > length: + return s[:length-3] + else: + return s + +def edge_label(name, net): + bgcolors = { + "default": "white", + "OANALOG": "turquoise", + "EANALOG": "orange", + } + try: + bgcolor = bgcolors[net["type"]] + except: + bgcolor = bgcolors["default"] + + short_name = name + if short_name.startswith('ROOT/'): + short_name = short_name[5:] + + attributes = [f'<table style="rounded" border="0" cellborder="1" cellspacing="10" bgcolor="{bgcolor}" cellpadding="4" align="center">'] + attributes.append(f'<tr><td bgcolor="grey91" port="head"><b>{html.escape(short_name)}</b></td></tr>') + + attributes.append(f'<tr><td bgcolor="{bgcolor}" port="middle" border="0"><table border="0" cellborder="1" cellspacing="0">') + # attributes.append(f'<tr><td bgcolor="{bgcolor}"><table border="0" cellborder="1" cellspacing="0" cellpadding="0">') + attributes.append(f'<tr><td bgcolor="grey91">Type</td><td bgcolor="white">{net["type"]}</td></tr>') + attributes.append(f'<tr><td bgcolor="grey91">Bidirectional</td><td bgcolor="white">{"true" if net["bidirectional"] else "false"}</td></tr>') + attributes.append(f'<tr><td bgcolor="grey91">Size</td><td bgcolor="white">{net["size"]}</td></tr>') + attributes.append(f'<tr><td bgcolor="grey91">Readers</td><td bgcolor="white">{net["readers"]}</td></tr>') + attributes.append(f'<tr><td bgcolor="grey91">Writers</td><td bgcolor="white">{net["writers"]}</td></tr>') + attributes.append(f'</table></td></tr>') + + attributes.append('</table>') + return f'"{name}" [label=<{"".join(attributes)}> shape=none fillcolor="{bgcolor}" margin="0.05"]' + + + +def node_label(element): + attributes = ['<table border="0" cellborder="1" cellspacing="0" cellpadding="4" align="center">'] + + short_name = element["name"] + if short_name.startswith('ROOT/'): + short_name = short_name[5:] + # Header + attributes.append(f'<tr><td bgcolor="grey91"><b>{html.escape(short_name)}</b></td></tr>') + + # Nets + attributes.append(f'<tr><td bgcolor="darkslategray2"><table border="0" cellborder="1" cellspacing="8">') + if 'nets' in element and element['nets']: + nets = ''.join(f'<tr><td bgcolor="white" cellpadding="4" port="{html.escape(str(i))}">{str(i)}</td></tr>' for i,net in enumerate(element['nets'])) + attributes.append(f'{nets}') + else: + attributes.append('<tr><td border="0" cellpadding="0">∅</td></tr>') + attributes.append(f'</table></td></tr>') + + # Args + attributes.append(f'<tr><td bgcolor="palegreen"><table border="0" cellborder="1" cellpadding="2" cellspacing="0">') + if 'args' in element and element['args']: + args = ''.join(f'<tr><td bgcolor="white" cellpadding="4">{html.escape(shorten(v["value"]))}</td></tr>' for v in element['args']) + attributes.append(f'{args}') + else: + attributes.append('<tr><td border="0" cellpadding="0">∅</td></tr>') + attributes.append(f'</table></td></tr>') + + # Kwargs + attributes.append(f'<tr><td bgcolor="wheat"><table border="0" cellborder="1" cellpadding="2" cellspacing="0">') + if 'kwargs' in element and element['kwargs']: + kwargs = ''.join(f'<tr><td bgcolor="grey91">{html.escape(k)}</td><td bgcolor="white">{html.escape(shorten(v["value"]))}</td></tr>' for k, v in element['kwargs'].items()) + attributes.append(f'{kwargs}') + else: + attributes.append('<tr><td border="0" cellpadding="0">∅</td></tr>') + attributes.append(f'</table></td></tr>') + + attributes.append('</table>') + return f'"{element["name"]}" [label=<{"".join(attributes)}> shape=none margin="0"]' + +def edge(element): + if 'nets' in element: + for i,net in enumerate(element['nets']): + # yield f'"{element["name"]}":"{str(i)}" -- "{net}":"head"' + yield f'"{element["name"]}":"{str(i)}" -> "{net}":"middle"[ arrowhead = none ]' + +def generate_graph(description): + result = [] + result.append('digraph G {') + # result.append(' fontname="Helvetica,Arial,sans-serif"') + # result.append(' node [fontname="Helvetica,Arial,sans-serif"]') + # result.append(' edge [fontname="Helvetica,Arial,sans-serif"]') + result.append(' fontname="Cascadia,Courrier,mono"') + result.append(' node [fontname="Cascadia,Courrier,mono"]') + result.append(' edge [fontname="Cascadia,Courrier,mono"]') + result.append(' layout="sfdp"') + result.append(' overlap=false') + result.append(' splines=curved') + + for name, net in description["nets"].items(): + result.append(' ' + edge_label(name, net)) + + for element in description["elements"]: + result.append(' ' + node_label(element)) + result.extend(' ' + e for e in edge(element)) + + result.append('}') + return '\n'.join(result) + +def draw_graph(json_file, out_file): + with open(json_file) as f: + description = json.load(f) + + dot_src = generate_graph(description) + # print(dot_src) + graph = graphviz.Source(dot_src) + graph.render(outfile=out_file) + print(f'Results written to {out_file}') + +def main(): + try: + json_file = sys.argv[1] + except IndexError: + print('First and only argument should be a JSON description of the circuit') + try: + out_file = sys.argv[2] + except IndexError: + out_file = json_file + ".png" + + with open(json_file) as f: + description = json.load(f) + + dot_src = generate_graph(description) + # print(dot_src) + graph = graphviz.Source(dot_src) + graph.render(outfile=out_file) + print(f'Results written to {out_file}') + +if __name__ == '__main__': + main() diff --git a/pyspecs/pyspecs_example.ipynb b/pyspecs/pyspecs_example.ipynb new file mode 100644 index 0000000..1ca337d --- /dev/null +++ b/pyspecs/pyspecs_example.ipynb @@ -0,0 +1,682 @@ +{ + "cells": [ + { + "cell_type": "code", + "execution_count": 1, + "id": "fdfbe616-3959-44bb-a62e-cccb87a8bee7", + "metadata": {}, + "outputs": [], + "source": [ + "import os\n", + "import sys\n", + "path_to_specs = \"../\" # This needs to change if the notebook is used somewhere else\n", + "sys.path.insert(0, os.path.realpath(path_to_specs))\n", + "\n", + "from pyspecs import specs\n", + "import numpy as np\n", + "import pandas as pd\n", + "import matplotlib.pyplot as plt\n", + "\n", + "# Dependencies:\n", + "# pyDigitalWaveTools 1.2 (https://pypi.org/project/pyDigitalWaveTools/)\n", + "# pandas\n", + "# numpy" + ] + }, + { + "cell_type": "markdown", + "id": "2bf6e3a5-ef41-4ae1-bc90-50eb142ef0dd", + "metadata": {}, + "source": [ + "### Calling the simulation\n", + "\n", + "There are two ways of doing it. The first one is the default, with the arguments shown in the function call.\n", + "\n", + "The second way uses custom_arguments as a dictionary of arguments. All arguments there are the same that can be passed to specs, with the same syntax except the - or -- before commands.\n", + "\n", + "You can put the verbose variable as True to see the full SPECS output" + ] + }, + { + "cell_type": "code", + "execution_count": 2, + "id": "b5a1dc45-58ae-4892-92ce-3e0a54b57a23", + "metadata": {}, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "Executing SPECS from python. . .\n", + "Command: ../specs -f ../circuits/add_drop_pyspecs.cir -o ../traces/delete_me --abstol 1e-08 --reltol 0.0001\n", + "Execution finished with code: 0\n", + "Time in ms: 43.5395\n" + ] + } + ], + "source": [ + "# Simulating in the basic way\n", + "netlist_file = \"../circuits/add_drop_pyspecs.cir\"\n", + "output_file = \"../traces/delete_me\"\n", + "time_ms, std_out = specs.simulate(netlist_file=netlist_file, simulator_directory=path_to_specs, abstol=1e-8, reltol=1e-4, output_file=output_file, verbose=False)\n", + "print(\"Time in ms: \", time_ms)" + ] + }, + { + "cell_type": "code", + "execution_count": 3, + "id": "2143ab2e-f911-49db-a8dd-f6efb264bae6", + "metadata": {}, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "Executing SPECS from python. . .\n", + "Command: ../specs -o ../traces/delete_me --abstol 1e-08 --reltol 0.0001 -f ../circuits/add_drop_pyspecs.cir\n", + "Execution finished with code: 0\n", + "Time in ms: 87.333\n" + ] + } + ], + "source": [ + "# Simulating in the custom way. This can be used for more advanced use-cases or for \n", + "# new features that weren't completely implemented in the wrapper yet\n", + "\n", + "test_dict = {\"f\":\"../circuits/add_drop_pyspecs.cir\", \"o\":\"../traces/delete_me\", \"abstol\":1e-8, \"reltol\":1e-4}\n", + "time_ms, std_out = specs.simulate(custom_arguments=test_dict, simulator_directory=path_to_specs, verbose=False)\n", + "print(\"Time in ms: \", time_ms)" + ] + }, + { + "cell_type": "markdown", + "id": "6ea09e11-30b8-474e-9d20-4197201e74d0", + "metadata": {}, + "source": [ + "### Having a non-hierarchical dataframe as output\n", + "\n", + "This data structure has everything in the same table directly. We chose to separate the data in two dataframes:\n", + "- df_probes: contains the probe data (optical power, field, phase, wavelength)\n", + "- df_pdet: contains the photodetector data (electric current and time)" + ] + }, + { + "cell_type": "code", + "execution_count": 4, + "id": "1987d33f-6b5a-4ce5-8151-19086d691bca", + "metadata": {}, + "outputs": [ + { + "name": "stdout", + "output_type": "stream", + "text": [ + "--- Contents of simulation ---\n", + "In df_pdet\n", + "In df_probes\n", + "\t time\n", + "\t PROBE{ROOT/N00001}/power\n", + "\t PROBE{ROOT/N00001}/abs\n", + "\t PROBE{ROOT/N00001}/phase\n", + "\t PROBE{ROOT/N00002}/power\n", + "\t PROBE{ROOT/N00002}/abs\n", + "\t PROBE{ROOT/N00002}/phase\n", + "\t PROBE{ROOT/N00003}/power\n", + "\t PROBE{ROOT/N00003}/abs\n", + "\t PROBE{ROOT/N00003}/phase\n", + "\t PROBE{ROOT/N00004}/power\n", + "\t PROBE{ROOT/N00004}/abs\n", + "\t PROBE{ROOT/N00004}/phase\n", + "\t PROBE{ROOT/add}/power\n", + "\t PROBE{ROOT/add}/abs\n", + "\t PROBE{ROOT/add}/phase\n", + "\t PROBE{ROOT/drop}/power\n", + "\t PROBE{ROOT/drop}/abs\n", + "\t PROBE{ROOT/drop}/phase\n", + "\t PROBE{ROOT/in}/power\n", + "\t PROBE{ROOT/in}/abs\n", + "\t PROBE{ROOT/in}/phase\n", + "\t PROBE{ROOT/out}/power\n", + "\t PROBE{ROOT/out}/abs\n", + "\t PROBE{ROOT/out}/phase\n", + "\t ROOT/PROBE1/power\n", + "\t ROOT/PROBE1/abs\n", + "\t ROOT/PROBE1/phase\n", + "\t ROOT/PROBE2/power\n", + "\t ROOT/PROBE2/abs\n", + "\t ROOT/PROBE2/phase\n", + "\t ROOT/PROBE3/power\n", + "\t ROOT/PROBE3/abs\n", + "\t ROOT/PROBE3/phase\n", + "Type of simulation: TD\n", + "------------------------------\n" + ] + } + ], + "source": [ + "(df_probes,df_pdet) = specs.parse_vcd_dataframe(output_file + '.vcd')" + ] + }, + { + "cell_type": "code", + "execution_count": 5, + "id": "0e91dc0f-8e8c-4e25-921b-fe1e7a46f687", + "metadata": {}, + "outputs": [ + { + "data": { + "image/png": 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\n", 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<td>0.0</td>\n", + " <td>0.0</td>\n", + " <td>0.0</td>\n", + " </tr>\n", + " <tr>\n", + " <th>1249</th>\n", + " <td>2.996000e-09</td>\n", + " <td>0.000520</td>\n", + " <td>0.022801</td>\n", + " <td>1.570796</td>\n", + " <td>0.000508</td>\n", + " <td>0.022543</td>\n", + " <td>1.570796</td>\n", + " <td>0.000532</td>\n", + " <td>0.023062</td>\n", + " <td>1.570796</td>\n", + " <td>...</td>\n", + " <td>-3.141593e+00</td>\n", + " <td>0.000012</td>\n", + " <td>0.003420</td>\n", + " <td>-3.141593e+00</td>\n", + " <td>0.000012</td>\n", + " <td>0.003459</td>\n", + " <td>-3.141593</td>\n", + " <td>0.0</td>\n", + " <td>0.0</td>\n", + " <td>0.0</td>\n", + " </tr>\n", + " <tr>\n", + " <th>1250</th>\n", + " <td>2.998000e-09</td>\n", + " <td>0.000520</td>\n", + " <td>0.022801</td>\n", + " <td>1.570796</td>\n", + " <td>0.000508</td>\n", + " <td>0.022543</td>\n", + " <td>1.570796</td>\n", + " <td>0.000508</td>\n", + " <td>0.022543</td>\n", + " <td>1.570796</td>\n", + " <td>...</td>\n", + " <td>-3.141593e+00</td>\n", + " <td>0.000012</td>\n", + " <td>0.003420</td>\n", + " <td>-3.141593e+00</td>\n", + " <td>0.000011</td>\n", + " <td>0.003381</td>\n", + " <td>-3.141593</td>\n", + " <td>0.0</td>\n", + " <td>0.0</td>\n", + " <td>0.0</td>\n", + " </tr>\n", + " </tbody>\n", + "</table>\n", + "<p>1251 rows × 34 columns</p>\n", + "</div>" + ], + "text/plain": [ + " time PROBE{ROOT/N00001}/power PROBE{ROOT/N00001}/abs \\\n", + "0 0.000000e+00 0.000000 0.000000 \n", + "1 5.000000e-10 0.000000 0.000000 \n", + "2 5.020000e-10 0.000000 0.000000 \n", + "3 5.040000e-10 0.021994 0.148303 \n", + "4 5.060000e-10 0.021994 0.148303 \n", + "... ... ... ... \n", + "1246 2.990000e-09 0.000569 0.023863 \n", + "1247 2.992000e-09 0.000544 0.023326 \n", + "1248 2.994000e-09 0.000544 0.023326 \n", + "1249 2.996000e-09 0.000520 0.022801 \n", + "1250 2.998000e-09 0.000520 0.022801 \n", + "\n", + " PROBE{ROOT/N00001}/phase PROBE{ROOT/N00002}/power \\\n", + "0 0.000000 0.000000 \n", + "1 0.000000 0.022500 \n", + "2 0.000000 0.022500 \n", + "3 1.570796 0.087986 \n", + "4 1.570796 0.087986 \n", + "... ... ... \n", + "1246 1.570796 0.000557 \n", + "1247 1.570796 0.000532 \n", + "1248 1.570796 0.000532 \n", + "1249 1.570796 0.000508 \n", + "1250 1.570796 0.000508 \n", + "\n", + " PROBE{ROOT/N00002}/abs PROBE{ROOT/N00002}/phase \\\n", + "0 0.000000 0.000000 \n", + "1 0.150000 1.570796 \n", + "2 0.150000 1.570796 \n", + "3 0.296625 1.570796 \n", + "4 0.296625 1.570796 \n", + "... ... ... \n", + "1246 0.023593 1.570796 \n", + "1247 0.023062 1.570796 \n", + "1248 0.023062 1.570796 \n", + "1249 0.022543 1.570796 \n", + "1250 0.022543 1.570796 \n", + "\n", + " PROBE{ROOT/N00003}/power PROBE{ROOT/N00003}/abs \\\n", + "0 0.000000 0.000000 \n", + "1 0.000000 0.000000 \n", + "2 0.022500 0.150000 \n", + "3 0.022500 0.150000 \n", + "4 0.087986 0.296625 \n", + "... ... ... \n", + "1246 0.000557 0.023593 \n", + "1247 0.000557 0.023593 \n", + "1248 0.000532 0.023062 \n", + "1249 0.000532 0.023062 \n", + "1250 0.000508 0.022543 \n", + "\n", + " PROBE{ROOT/N00003}/phase ... PROBE{ROOT/out}/phase ROOT/PROBE1/power \\\n", + "0 0.000000 ... 0.000000e+00 0.000000 \n", + "1 0.000000 ... 0.000000e+00 0.977500 \n", + "2 1.570796 ... 0.000000e+00 0.977500 \n", + "3 1.570796 ... -6.316716e-15 0.934007 \n", + "4 1.570796 ... -6.316716e-15 0.934007 \n", + "... ... ... ... ... \n", + "1246 1.570796 ... -3.141593e+00 0.000013 \n", + "1247 1.570796 ... -3.141593e+00 0.000012 \n", + "1248 1.570796 ... -3.141593e+00 0.000012 \n", + "1249 1.570796 ... -3.141593e+00 0.000012 \n", + "1250 1.570796 ... -3.141593e+00 0.000012 \n", + "\n", + " ROOT/PROBE1/abs ROOT/PROBE1/phase ROOT/PROBE2/power ROOT/PROBE2/abs \\\n", + "0 0.000000 0.000000e+00 0.000000 0.000000 \n", + "1 0.988686 0.000000e+00 0.000000 0.000000 \n", + "2 0.988686 0.000000e+00 0.000506 0.022500 \n", + "3 0.966441 -6.316716e-15 0.000506 0.022500 \n", + "4 0.966441 -6.316716e-15 0.001980 0.044494 \n", + "... ... ... ... ... \n", + "1246 0.003579 -3.141593e+00 0.000013 0.003539 \n", + "1247 0.003499 -3.141593e+00 0.000013 0.003539 \n", + "1248 0.003499 -3.141593e+00 0.000012 0.003459 \n", + "1249 0.003420 -3.141593e+00 0.000012 0.003459 \n", + "1250 0.003420 -3.141593e+00 0.000011 0.003381 \n", + "\n", + " ROOT/PROBE2/phase ROOT/PROBE3/power ROOT/PROBE3/abs ROOT/PROBE3/phase \n", + "0 0.000000 0.0 0.0 0.0 \n", + "1 0.000000 1.0 1.0 0.0 \n", + "2 -3.141593 1.0 1.0 0.0 \n", + "3 -3.141593 1.0 1.0 0.0 \n", + "4 -3.141593 1.0 1.0 0.0 \n", + "... ... ... ... ... \n", + "1246 -3.141593 0.0 0.0 0.0 \n", + "1247 -3.141593 0.0 0.0 0.0 \n", + "1248 -3.141593 0.0 0.0 0.0 \n", + "1249 -3.141593 0.0 0.0 0.0 \n", + "1250 -3.141593 0.0 0.0 0.0 \n", + "\n", + "[1251 rows x 34 columns]" + ] + }, + "execution_count": 6, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "df_probes" + ] + }, + { + "cell_type": "markdown", + "id": "64c2170f-f879-43d2-ae1f-850ebf667601", + "metadata": {}, + "source": [ + "### Helper to recover data\n", + "\n", + "As SPECS is not a sampled simulator, but rather event-driven, unchanged values will not appear in the dataframe.\n", + "\n", + "To make it a bit easier to recover a value by time, we created the 'find_by_time' function that automates\n", + "some of the recovery for you. \n", + "\n", + "NOTE: if you want to do it for multiple values, it is better to implement it using the Pandas framework in your own way. Check the Pandas dataframe.ffill() function. Using find_by_time in loops will result in very slow python code." + ] + }, + { + "cell_type": "code", + "execution_count": 8, + "id": "d042f4a5-de7d-425d-b772-f245e6346871", + "metadata": {}, + "outputs": [ + { + "data": { + "text/plain": [ + "0.07090737655723536" + ] + }, + "execution_count": 8, + "metadata": {}, + "output_type": "execute_result" + } + ], + "source": [ + "target_time = 2.5668e-9\n", + "specs.find_by_time(df_probes,'PROBE{ROOT/N00001}/power',target_time)" + ] + }, + { + "cell_type": "code", + "execution_count": null, + "id": "75ede147-1232-46f5-b3b1-4a9dc75a28b7", + "metadata": {}, + "outputs": [], + "source": [] + } + ], + "metadata": { + "kernelspec": { + "display_name": "Python 3 (ipykernel)", + "language": "python", + "name": "python3" + }, + "language_info": { + "codemirror_mode": { + "name": "ipython", + "version": 3 + }, + "file_extension": ".py", + "mimetype": "text/x-python", + "name": "python", + "nbconvert_exporter": "python", + "pygments_lexer": "ipython3", + "version": "3.8.10" + } + }, + "nbformat": 4, + "nbformat_minor": 5 +} diff --git a/pyspecs/specs.py b/pyspecs/specs.py new file mode 100644 index 0000000..ca0d6f9 --- /dev/null +++ b/pyspecs/specs.py @@ -0,0 +1,236 @@ +import numpy as np +import matplotlib.pyplot as plt +import pandas as pd +import subprocess +import time +from .specsparse import * + +""" +Ideas: + - generate value files + - generate netlists based on graph representations + - simulate + - paralel run + - others? + +""" + +default_settings = { + "o": "traces/delete_me.vcd", + "abstol": 1e-8, + "reltol": 1e-4 +} + + + +def create_arguments_netlist(netlist_file, output_file, abstol, reltol): + """ Function called by specs.simulate(), generates + the argument string for the command-line tool. + + Returns: + arguments (list of str): + Formatted list of arguments required by SPECS + """ + + arguments_dictionary = { "f":netlist_file, + "o":output_file, + "abstol":abstol, + "reltol":reltol + } + + arguments = create_arguments_dictionary(arguments_dictionary) + + return arguments + + +def create_arguments_dictionary(arguments_dictionary:dict): + """ Function called by specs.simulate(), generates + the argument string for the command-line tool. + + Args: + arguments_dictionary (dict): + The keys of this dictionary are keywords expected + by SPECS, while their contents hold their value. + + Example: {"f":"circuit.txt", "o":"data.vcd"," + "abstol":1e-8, "reltol":1e-4 + } + + Returns: + arguments (list of str): + Formatted list of arguments required by SPECS + """ + + arguments = [] + + for keyword_string in arguments_dictionary: + value = arguments_dictionary[keyword_string] + + # Long keywords are prepended with double dash + if len(keyword_string) > 1: + keyword_string = "--" + keyword_string + else: + keyword_string = "-" + keyword_string + + arguments.append(keyword_string) + if value is not None: + arguments.append(str(value)) + + return arguments + +def run_and_time(simulator_command, arguments, verbose): + """Function that runs SPECS and times it. + + This is BLOCKING execution, so not intended for paralel + usage. For this case, use par_run(). + + Args: + simulator_command (str): + The command to call SPECS comprised of + its directory and simulator name. Ex: ./specs + arguments (str): + Command-line arguments passed to SPECS + verbose (bool): + If true, will print SPECS output to the Python shell + Returns: + time_ms: + Execution time of SPECS for that run, in miliseconds (ms) + """ + + print("Executing SPECS from python. . .") + + #spec_env = {"SC_COPYRIGHT_MESSAGE":"DISABLE"} + + process_call = simulator_command + arguments + + tic_ns = time.perf_counter_ns() + print("Command: ", ' '.join(process_call)) + #p = subprocess.Popen(process_call, env=spec_env, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) + p = subprocess.Popen(process_call, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) + specs_stdout, specs_stderr = p.communicate() + p.wait() + toc_ns = time.perf_counter_ns() + + time_ms = (toc_ns - tic_ns)*1e-6 + + specs_return_code = p.returncode + print("Execution finished with code: ", specs_return_code) + + if (not specs_return_code == 0) or (verbose): + print("SPECS had an error. Here is the full output: ") + for line in specs_stdout.splitlines(): + print(line.decode(encoding='utf-8', errors='ignore')) + + return time_ms, (specs_return_code, specs_stdout) + +def simulate(netlist_file=None, + custom_arguments=None, + simulator_directory="", + verbose=False, + **kwargs): + """Function that call SPECS from the Python shell + + Args: + netlist_file (str): + File containing the netlist description + of the circuit to simulate. Should contain + a simulation directive within it (.tran, .dc, .op). + + The netlist is a text file that can be: + - Created using the KiCAD library of components in + its schematic editor (eeschema) + - Created and edited by hand by knowing the syntax + - Generated proceduraly using scripts. It's a basic .txt + + It can be achieved with custom arguments by defining + {"f": "path/to/file"} in the dict custom_arguments. + + Defaults to "". + + output_file (str, optional): + VCD file containing all the recorded events. + Can be read with GTKWAVE or parsed with parse_vcd() + Defaults to "traces/delete_me.vcd". + + abstol (double, optional): + Field absolute tolerance for propagating events in the simulator. + Is relevant when running circuits with feedback. + + It can be achieved with custom arguments by defining + {"abstol": 1e-8} in the dict custom_arguments. + + Defaults to 1e-8. + + reltol (double, optional): + Field relative tolerance for propagating events in the simulator. + Is relevant when running circuits with feedback. + + It can be achieved with custom arguments by defining + {"reltol": 1e-4} in the dict custom_arguments. + + Defaults to 1e-4. + + custom_arguments (dict, optional): + <<< ADVANCED USE >>> + It is possible to call SPECS with many other arguments. + You can consult them by running specs without arguments + in the command line interface. + + If custom_arguments is defined, you need to specify + the netlist as a part of the dictionary. + + There is no specific order that the arguments must follow. + + simulator_directory (str, optional): + SPECS can either be included in the PATH variable + or exist as a standalone executable. In the latter case, + it is necessary to define its location. + + Examples: + simulator_directory = "./" + Means that the executable is in the same + directory as this script." + simulator_directory = "/home/user/Documents/" + Means that the SPECS executable is in that + specific path. + + Defaults to "". + + verbose (bool, optional): + If true, will print all the outputs generated by SPECS + to the Python shell. + """ + + assert((netlist_file is not None) or (custom_arguments is not None)) + + + if 'abstol' in kwargs: + abstol = kwargs['abstol'] + else: + abstol = default_settings['abstol'] + + if 'reltol' in kwargs: + reltol = kwargs['reltol'] + else: + reltol = default_settings['reltol'] + + if 'output_file' in kwargs: + output_file = kwargs['output_file'] + else: + output_file = default_settings['o'] + + arguments = [] + if (netlist_file is not None): + arguments = create_arguments_netlist(netlist_file, output_file, abstol, reltol) + + if (custom_arguments is not None): + current_settings = default_settings.copy() + current_settings.update(custom_arguments) # overwrites defaults with the user input where needed + arguments += create_arguments_dictionary(current_settings) + + simulator_name = "specs" + simulator_command = [simulator_directory + simulator_name] + + outputs = run_and_time(simulator_command, arguments, verbose) + + return outputs diff --git a/pyspecs/specsparse.py b/pyspecs/specsparse.py new file mode 100644 index 0000000..91f4f4f --- /dev/null +++ b/pyspecs/specsparse.py @@ -0,0 +1,301 @@ +from pyDigitalWaveTools.vcd.parser import VcdParser +import pandas as pd +import numpy as np +import matplotlib.pyplot as plt +import json + +def parse_vcd_dataframe(filename): + """Parses a SPECS VCD file and returns simulation data as a DataFrame. + + Args: + filename (str): + The path to the VCD file. + + Returns: + simulation_data_df: + The simulation data with signals as columns and time/wavelength as rows. + """ + with open(filename) as vcd_file: + vcd = VcdParser() + vcd.parse(vcd_file) + data = vcd.scope.toJson() + + # print(json.dumps(data, indent=4, sort_keys=True)) + simulation_data_df = pd.DataFrame() # initialize empty dataframe + + top_level_name = 'SystemC' + top_scope = None + for child in data['children']: + if is_scope(child) and child['name'] == top_level_name: + top_scope = child + break + if top_scope is None: + raise RuntimeError(f'Top level scope not found in {filename}') + + assert('name' in top_scope.keys()) + assert('type' in top_scope.keys()) + assert('children' in top_scope.keys()) + assert(top_scope['type']['name'] == 'struct') + + scopes = [] + probes = [] + pdets = [] + values = [] + for child in top_scope['children']: + if is_scope(child): + scopes.append(child) + if is_probe(child): + probes.append(child) + if is_pdet(child): + pdets.append(child) + else: + values.append(child) + + # print(f'top level values: {[x["name"] for x in values]}') + # print(f'top level scopes: {[x["name"] for x in scopes]}') + # print(f'top level probes: {[x["name"] for x in probes]}') + + is_wl_sweep = check_wl_sweep(probes) + has_wl = False + save_wl = False + + df_probes = pd.DataFrame() + if len(probes) > 0: + for i,probe in enumerate(probes): + probe_name = probe['name'] + for j,signal in enumerate(probe['children']): + signal_name = signal['name'] + full_name = probe_name + '/' + signal_name + + save_wl = is_wl_sweep and not has_wl + if (not signal_name=='wavelength' or (signal_name=='wavelength' and save_wl)): + current_signal_df = pd.DataFrame() + current_signal_df['tick'] = vcd_get_ticks_vector(signal) + + if signal_name=='wavelength': + has_wl = False # this variable set to true will save WL vector only once + full_name = signal_name # wavelength should be saved independent of probe + + current_signal_df[full_name] = vcd_get_data_vector(signal) + + if i==0 and j==0: + df_probes = current_signal_df + else: + df_probes = df_probes.merge(current_signal_df, how='outer') + + df_probes = df_probes.sort_values('tick') + df_probes = df_probes.reset_index(drop=True) + + if not is_wl_sweep: # making sure that time goes first + df_probes.insert(0, 'time', df_probes['tick'] * vcd_get_multiplier(vcd)) + else: # making sure that wl goes first + first_column = df_probes.pop('wavelength') + df_probes.insert(0, 'wavelength', first_column) + + # we don't need ticks anymore + df_probes = df_probes.drop(columns=['tick']) + + # getting rid of the NaNs: for time domain we repeat the last valid value, + # for freq domain we interpolate linearly + if is_wl_sweep: + df_probes = df_probes.drop(df_probes.loc[df_probes['wavelength']== 0].index.values) + df_probes = df_probes.interpolate() + else: + df_probes = df_probes.fillna(method='ffill') + + # Same with pdetectors + df_pdet = pd.DataFrame() + if not is_wl_sweep and len(pdets) > 0: + for i,pdet in enumerate(pdets): + pdet_name = pdet['name'] + for j,signal in enumerate(pdet['children']): + if signal["type"]["name"] == "struct": + continue + signal_name = signal['name'] + full_name = pdet_name + '/' + signal_name + + # Add data to a temporary DF + current_signal_df = pd.DataFrame() + current_signal_df['tick'] = vcd_get_ticks_vector(signal) + current_signal_df[full_name] = vcd_get_data_vector(signal) + + if df_pdet.empty: + df_pdet = current_signal_df + else: + df_pdet = df_pdet.merge(current_signal_df, how='outer') + + df_pdet = df_pdet.sort_values('tick') + df_pdet = df_pdet.reset_index(drop=True) + if False: + # Add a point next to first value from photodetector + # to ensure 'step' appearance (as its more correct) + print(df_pdet.head()) + df_pdet.loc[-1] = df_pdet.loc[0] + df_pdet.loc[0, 'tick'] = df_pdet.loc[1]['tick'] + df_pdet = df_pdet.sort_values('tick') + df_pdet = df_pdet.reset_index(drop=True) + print(df_pdet.head()) + + # making sure that time goes first + df_pdet.insert(0, 'time', df_pdet['tick'] * vcd_get_multiplier(vcd)) + + # we don't need ticks anymore + df_pdet = df_pdet.drop(columns=['tick']) + + # getting rid of the NaNs: for time domain we repeat the last valid value, + df_pdet = df_pdet.fillna(method='ffill') + + + print('--- Contents of simulation ---') + print ('In df_pdet') + for col in list(df_pdet.columns): + print('\t',col) + print ('In df_probes') + for col in list(df_probes.columns): + print('\t',col) + if is_wl_sweep: + print('Type of simulation: FD') + else: + print('Type of simulation: TD') + + print('------------------------------') + + return df_probes, df_pdet + +def verify_wl_sweep(simulation_data): + """Checks the type of simulation based on the processed data. + + Args: + simulation_data (DataFrame): + Data recovered using parse_vcd_xxxx methods. + + Returns: + is_wl_sweep(bool): + True if it is a wavelength sweep, False otherwise. + """ + is_wl_sweep = False + + if isinstance(simulation_data,pd.DataFrame): + is_wl_sweep = list(simulation_data.columns)[0] == 'wavelength' + else: + print('Error: Invalid simulation data') + + return is_wl_sweep + +def find_by_time(simulation_data,colname,time): + """Finds specific time values from the processed data + Useful when you want to a datapoint of a specific moment + but there was no transition there so it is not necessarily + contained in the data frame. + + As it is an event-based simulator, it means that if + the exact time that you want is not there, the closest + previous value is the correct one, and this function gets it + automatically for you. + + Args: + simulation_data (DataFrame): + Data recovered using parse_vcd_xxxx methods. + colname (string): + Name of the column that you want to extract data from. + time (float): + Time that you want to get your sample. + + Returns: + value(float): + Sample value at the specified time.. + """ + # first check if exact match is present + # else, gets most recent value smaller than + # the specified time + + value = None + + exact_match_df = simulation_data.loc[simulation_data['time'] == time] + if exact_match_df.empty: + previous_match_df = simulation_data.loc[simulation_data['time'] <= time] + previous_match_df = previous_match_df.tail(1) + value = previous_match_df[colname].values[0] + else: + value = exact_match_df[colname].values[0] + + return value + +######### The next functions are intended for internal use ######### + +def is_scope(data): + return data['type']['name'] == 'struct' + +def is_pdet(data): + if not is_scope(data): + return False + + allowed_attrs = ["readout", "readout_no_interference"] + for child in data['children']: + if child['name'] not in allowed_attrs: + return False + return True + +def is_probe(data): + if not is_scope(data): + return False + + allowed_attrs = ["wavelength", "power", "abs", "phase", "real", "imag"] + for child in data['children']: + if is_scope(child): + # Probe contains only values + return False + base_name = child['name'] + # For MLprobe ignore what's after the "@" + # If there is no "@", it remains the full name + i_last_at = base_name.rfind('@') + if i_last_at > 0: + base_name = base_name[0:i_last_at] + if base_name not in allowed_attrs: + return False + return True + +def check_wl_sweep(probes): + for probe in probes: + # see if wavelength is part of probe attributes + attrs = ["wavelength", "power", "abs", "phase"] + lengths = {a:-1 for a in attrs} + for signal in probe['children']: + for a in attrs: + if signal['name'] == a: + lengths[a] = len( signal['data'] ) + + match = False + if lengths[attrs[1]] != -1: + match = lengths[attrs[0]] == lengths[attrs[1]] + if lengths[attrs[2]] != -1: + match = lengths[attrs[0]] == lengths[attrs[2]] + + if match and lengths[attrs[0]] != 1: + return True + return False + +def vcd_get_data_vector(signal): + data = np.array([float(tup[1][1::]) for tup in signal['data']]) + return data + +def vcd_get_ticks_vector(signal): + ticks = np.array([tup[0] for tup in signal['data']]) + return ticks + +def vcd_get_multiplier(vcd): + timescale_list = vcd.timescale.split() + base_scale = float(timescale_list[0]) + unit = timescale_list[1][0] + + multipliers = { + 's': 1.0, + 'm': 1e-3, + 'u': 1e-6, + 'n': 1e-9, + 'p': 1e-12, + 'f': 1e-15, + } + + # returns value in seconds + return base_scale * multipliers[unit] |