asap7/ethmac_lvt: study placement densities and grt

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

flow/BUILD.bazel

@@ -1,3 +1,4 @@
+load("@rules_python//python:pip.bzl", "compile_pip_requirements")
 load("@bazel-orfs//:openroad.bzl", "orfs_flow")
 
 filegroup(
@@ -261,3 +262,15 @@ orfs_flow(
     },
 )
 
+
+filegroup(
+    name = "ethmac_lvt_src",
+    srcs = glob(include=["designs/src/ethmac_lvt/*.v"]),
+    visibility = [":__subpackages__"],
+)
+
+compile_pip_requirements(
+    name = "requirements",
+    src = "requirements.in",
+    requirements_txt = "requirements_lock.txt",
+)

flow/MODULE.bazel

@@ -1,3 +1,5 @@
+"""ORFS bazel setup."""
+
 module(
     name = "orfs",
     version = "0.0.1",
@@ -7,7 +9,7 @@ module(
 bazel_dep(name = "bazel-orfs")
 git_override(
     module_name = "bazel-orfs",
-    commit = "b12fc7a172d4211315ec36214f872595e084ab25",
+    commit = "d30e1987275cb54163a4dfde421392c31d0a7148",
     remote = "https://github.com/The-OpenROAD-Project/bazel-orfs.git",
 )
 
@@ -22,3 +24,40 @@ git_override(
 #   module_name = "bazel-orfs", path = "../bazel-orfs"
 #)
 
+
+bazel_dep(name = "rules_python", version = "0.31.0")
+
+python = use_extension("@rules_python//python/extensions:python.bzl", "python")
+python.toolchain(
+    ignore_root_user_error = True,
+    python_version = "3.12",
+)
+
+pip = use_extension("@rules_python//python/extensions:pip.bzl", "pip")
+pip.parse(
+    hub_name = "orfs-pip",
+    python_version = "3.12",
+    requirements_lock = "//:requirements_lock.txt",
+)
+use_repo(pip, "orfs-pip")
+
+
+orfs = use_extension("@bazel-orfs//:extension.bzl", "orfs_repositories")
+orfs.default(
+    # To build an ORFS image from a PR:
+    # ./build_openroad.sh --latest
+    #
+    # Check out the PRs and modify the local repository as needed
+    # ./build_openroad.sh --no_init
+    #
+    # docker tag docker.io/openroad/flow-ubuntu22.04-builder:c46d41 gcr.io/ascenium/orfs-megaboom/flow-ubuntu22.04-builder:c46d41
+    # docker push gcr.io/ascenium/orfs-megaboom/flow-ubuntu22.04-builder:c46d41
+    # image = "gcr.io/ascenium/orfs-megaboom/flow-ubuntu22.04-builder:c46d41",
+    #
+    # Official image https://hub.docker.com/r/openroad/orfs/tags
+    image = "docker.io/openroad/orfs:v3.0-2130-g6b38aeeb",
+    # image = "gcr.io/ascenium/orfs-megaboom/flow-ubuntu22.04-builder:3d2c3d-2",
+    sha256 = "f5b573d244862bc59f858e2a3586c48aef70989e98f6541099bd15a720e28e7e",
+)
+use_repo(orfs, "com_github_nixos_patchelf_download")
+use_repo(orfs, "docker_orfs")

flow/cred_helper.py

@@ -0,0 +1,93 @@
+#!/usr/bin/env python3
+#
+# Returns information about user's GCP entitlements
+#
+# Usage: cred_helper.py [get|test]
+#
+#     get prints the GCP auth token
+#     test prints the user's GCP entitlements
+#
+# Calling script without arguments prints out usage information and then exits with a non-zero code (per spec)
+#
+
+import subprocess
+import requests
+import json
+import re
+import sys
+
+
+def get_gcloud_auth_token(test):
+    """
+    Returns the gcloud auth token based on the .user-bazelrc
+    """
+
+    with open(".user-bazelrc") as f:
+        all = f.read()
+    match = re.search(r"# user: (.*)", all)
+    if match is None:
+        sys.exit('Did not find username in .user-bazelrc file as "# user: <username>"')
+    USER = match.group(1)
+
+    cmd = ["gcloud", "auth", "print-access-token", USER]
+    if test:
+        print("Running: " + subprocess.list2cmdline(cmd))
+    result = subprocess.run(cmd, capture_output=True, text=True, check=True)
+    token = result.stdout.strip()
+    return token
+
+
+def generate_credentials(test):
+    """
+    Generate the credentials in a form that Bazel wants, which is the
+    Authorization key points to a list
+    """
+
+    bearer_token = get_gcloud_auth_token(test)
+
+    # Create the JSON object with the required format
+    credentials = {"headers": {"Authorization": [f"Bearer {bearer_token}"]}}
+    return credentials
+
+
+def test_permissions(credentials, bucket_name):
+    """
+    Tests the user's entitlements for this bucket
+
+    Note that the call to check the permissions needs the Authorization key to
+    point to a string and not a list. So, take the first element in the list
+    and make it the only value
+    """
+
+    credentials["headers"]["Authorization"] = credentials["headers"]["Authorization"][0]
+    url = (
+        f"https://storage.googleapis.com/storage/v1/b/{bucket_name}/iam/testPermissions"
+    )
+    permissions = {"permissions": ["storage.buckets.get", "storage.objects.create"]}
+
+    response = requests.get(url, params=permissions, headers=credentials["headers"])
+    response.raise_for_status()
+    return response.json()
+
+
+def main():
+    if (
+        len(sys.argv) <= 1
+        or (len(sys.argv) == 2 and sys.argv[1] not in ["get", "test"])
+        or len(sys.argv) >= 3
+    ):
+        sys.exit("Usage: python cred_helper.py [get|test]")
+    test = sys.argv[1] == "test"
+
+    credentials = generate_credentials(test)
+    if not test:
+        print(json.dumps(credentials, indent=2))
+        return
+
+    permissions = test_permissions(credentials, "megaboom-bazel-artifacts")
+
+    print(json.dumps(permissions, indent=2))
+
+
+if __name__ == "__main__":
+    main()

flow/designs/asap7/ethmac_lvt/BUILD.bazel

@@ -0,0 +1,81 @@
+load("@bazel-orfs//:sweep.bzl", "orfs_sweep")
+load("@orfs-pip//:requirements.bzl", "requirement")
+
+# Format densities, rounding to 2 decimal places.
+PLACEMENT_DENSITIES = [str(0.60 + x * 0.01 + 0.005)[:4] for x in range(20)]
+#PLACEMENT_DENSITIES.remove("0.67")
+
+orfs_sweep(
+    name = "ethmac_lvt",
+    arguments = {
+        # Faster builds
+        "SKIP_INCREMENTAL_REPAIR": "1",
+        "GPL_TIMING_DRIVEN": "0",
+        # Various
+        "SDC_FILE": "$(location :constraint.sdc)",
+        "ABC_AREA": "1",
+        "CORE_UTILIZATION": "40",
+        "CORE_ASPECT_RATIO": "1",
+        "CORE_MARGIN": "2",
+        "PLACE_DENSITY": "0.60",
+        "ASAP7_USELVT": "1",
+        "RECOVER_POWER": "1",
+        "ADDITIONAL_LIBS": "$(LIB_DIR)/asap7sc7p5t_AO_RVT_FF_nldm_211120.lib.gz \
+                                $(LIB_DIR)/asap7sc7p5t_INVBUF_RVT_FF_nldm_220122.lib.gz \
+			        $(LIB_DIR)/asap7sc7p5t_OA_RVT_FF_nldm_211120.lib.gz \
+			        $(LIB_DIR)/asap7sc7p5t_SIMPLE_RVT_FF_nldm_211120.lib.gz \
+			        $(LIB_DIR)/asap7sc7p5t_SEQ_RVT_FF_nldm_220123.lib",
+        "ADDITIONAL_GDS": "$(PLATFORM_DIR)/gds/asap7sc7p5t_28_R_220121a.gds",
+        "ADDITIONAL_LEFS": "$(PLATFORM_DIR)/lef/asap7sc7p5t_28_R_1x_220121a.lef",
+    },
+    other_variants = {"base": {}},
+    sources = {
+        "SDC_FILE": [":constraint.sdc"],
+    },
+    sweep = {
+        density: {
+            "arguments": {
+                "PLACE_DENSITY": density,
+            },
+            "previous_stage": {
+                "floorplan": "ethmac_lvt_synth",
+            },
+        }
+        for density in PLACEMENT_DENSITIES
+    },
+    top = "ethmac",
+    verilog_files = ["//:ethmac_lvt_src"],
+)
+
+[filegroup(
+    name = "ethmac_lvt_{density}_congestion".format(density = density),
+    srcs = [":ethmac_lvt_{density}_grt".format(density = density)],
+    output_group = "congestion.rpt",
+) for density in PLACEMENT_DENSITIES]
+
+filegroup(
+    name = "congestion",
+    srcs = [":ethmac_lvt_{density}_congestion".format(density = density) for density in PLACEMENT_DENSITIES],
+)
+
+py_binary(
+    name = "plot_congestion",
+    srcs = ["plot_congestion.py"],
+    main = "plot_congestion.py",
+    deps = [requirement("matplotlib")],
+)
+
+genrule(
+    name = "plot_pdf",
+    srcs = [":congestion"],
+    outs = ["congestion.pdf"],
+    cmd = "$(execpath :plot_congestion) $@ $(locations :congestion)",
+    tools = [":plot_congestion"],
+)
+
+sh_binary(
+    name = "plot",
+    srcs = [":open_plots.sh"],
+    args = ["$(location :plot_pdf)"],
+    data = [":plot_pdf"],
+)

flow/designs/asap7/ethmac_lvt/open_plots.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+xdg-open $1

flow/designs/asap7/ethmac_lvt/plot_congestion.py

@@ -0,0 +1,29 @@
+import matplotlib.pyplot as plt
+import numpy as np
+import sys
+import re
+import os
+
+
+output = sys.argv[1]
+files = sys.argv[2:]
+
+# count lines in each file and divide by 3 and create a list of those
+# numbers
+congestion = []
+for file in files:
+    with open(file, "r") as f:
+        lines = f.readlines()
+        print(file)
+        density = re.search(r"(\d+\.\d+)", file).group(1)
+        congestion.append((float(density), len(lines) // 4))
+
+# xy plot of density vs DRC errors
+x, y = zip(*congestion)
+plt.plot(x, y, "o-")
+plt.xlabel("Density")
+plt.ylabel("DRC Errors")
+plt.title("Density vs DRC Errors")
+plt.grid()
+plt.yscale("log")
+plt.savefig(output)

flow/requirements.in

@@ -0,0 +1,2 @@
+matplotlib==3.10.0
+PyYAML==6.0.2