Add symbiflow tests

.github/kokoro/continuous/nightly.cfg

@@ -55,5 +55,5 @@ env_vars {
 
 env_vars {
   key: "NUM_CORES"
-  value: "5"
+  value: "3"
 }

.github/kokoro/presubmit/nightly.cfg

@@ -55,5 +55,5 @@ env_vars {
 
 env_vars {
   key: "NUM_CORES"
-  value: "5"
+  value: "3"
 }

.github/kokoro/steps/vtr-full-setup.sh

@@ -2,5 +2,6 @@
 
 make get_titan_benchmarks
 make get_ispd_benchmarks
+make get_symbiflow_benchmarks
 
 dev/upgrade_vtr_archs.sh

.github/kokoro/steps/vtr-test.sh

@@ -47,3 +47,26 @@ echo "========================================"
 export VPR_NUM_WORKERS=1
 ./run_reg_test.py $VTR_TEST $VTR_TEST_OPTIONS -j$NUM_CORES
 kill $MONITOR
+
+echo "========================================"
+echo "Cleaning benchmarks files"
+echo "========================================"
+# Removing Symbiflow archs and benchmarks
+find vtr_flow/arch/symbiflow/ -type f -not -name 'README.*' -delete
+find vtr_flow/benchmarks/symbiflow/ -type f -not -name 'README.*' -delete
+
+# Removing ISPD benchmarks
+find vtr_flow/benchmarks/ispd_blif/ -type f -not -name 'README.*' -delete
+
+# Removing Titan benchmarks
+find vtr_flow/benchmarks/titan_blif/ -type f -not -name 'README.*' -delete
+
+# Removing ISPD, Titan and Symbiflow tarballs
+find . -type f -regex ".*\.tar\.\(gz\|xz\)" -delete
+
+# Make sure working directory doesn't exceed disk space limit!
+echo "Working directory size: $(du -sh)"
+if [[ $(du -s | cut -d $'\t' -f 1) -gt $(expr 1024 \* 1024 \* 90) ]]; then
+    echo "Working directory too large!"
+    exit 1
+fi

.gitignore

@@ -46,6 +46,17 @@ vtr_flow/benchmarks/titan_other_blif/*.sdc
 ispd_benchmarks_vtr*.tar.gz
 vtr_flow/benchmarks/ispd_blif/*.blif
 
+#
+# SymbiFlow benchmarks
+#
+#   We ignore the SymbiFlow netlists and architectures because of thier large size.
+#
+*symbiflow*.tar.xz
+vtr_flow/arch/symbiflow/*.bin
+vtr_flow/arch/symbiflow/*.xml
+vtr_flow/benchmarks/symbiflow/*.eblif
+vtr_flow/benchmarks/symbiflow/sdc/*.sdc
+
 #
 # Cloud9 Directory
 #

CMakeLists.txt

@@ -314,6 +314,14 @@ add_custom_target(get_ispd_benchmarks
     WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
     COMMENT "Downloading (~50MB) and extracting Titan benchmarks (~0.5GB) into VTR source tree.")
 
+#
+# SymbiFlow Benchmarks
+#
+add_custom_target(get_symbiflow_benchmarks
+    COMMAND ./vtr_flow/scripts/download_symbiflow.py --vtr_flow_dir ./vtr_flow
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+    COMMENT "Downloading (~100MB) and extracting SymbiFlow architectures (~2.7GB) into VTR source tree.")
+
 #
 # Unit Testing
 #

vtr_flow/arch/symbiflow/README.md

@@ -0,0 +1,12 @@
+SymbiFlow architectures
+=======================
+
+This directory holds all the SymbiFlow architectures that are generated in the [SymbiFlow-arch-defs](https://github.com/SymbiFlow/symbiflow-arch-defs) repository.
+
+The data files needed to successfully run VPR are:
+- Architecture XML definition
+- RR Graph
+- Router Lookahead
+- Place delay matrix lookup
+
+All the data files can be downloaded with the `make get_symbiflow_benchmarks` target in the root directory.

vtr_flow/benchmarks/symbiflow/README.md

@@ -0,0 +1,12 @@
+SymbiFlow benchmarks
+====================
+
+This directory holds all the SymbiFlow benchmarks that are generated in the [SymbiFlow-arch-defs](https://github.com/SymbiFlow/symbiflow-arch-defs) repository.
+
+The circuits come along with the SDC constraints file, if present, and have been produced with yosys.
+They are compatible with the symbiflow architectures produced in the same Symbiflow-arch-defs build.
+
+Some of the circuites require also the place constraint files to correctly place some IOs and clock tiles
+in the correct location, so not to incur in routability issues.
+
+All the data files can be downloaded with the `make get_symbiflow_benchmarks` target in the root directory.

vtr_flow/benchmarks/symbiflow/place_constr/README.md

@@ -0,0 +1,4 @@
+Place constraints
+=================
+
+This directory contains the Place constraints files corresponding to the homonym circuit file.

vtr_flow/benchmarks/symbiflow/sdc/README.md

@@ -0,0 +1,4 @@
+SDC constraints
+===============
+
+This directory contains the SDC constraints files corresponding to the homonym circuit file.

vtr_flow/scripts/download_symbiflow.py

@@ -0,0 +1,195 @@
+#!/usr/bin/env python3
+"""
+    Script to download the SymbiFlow Series-7 architectures
+"""
+
+import sys
+import os
+import argparse
+import math
+import textwrap
+import fnmatch
+import tempfile
+import shutil
+import subprocess
+from urllib import request
+
+GCS_URL = {
+    "architectures":
+        "https://storage.googleapis.com/symbiflow-arch-defs-gha/symbiflow-xc7a50t_test-latest",
+    "benchmarks":
+        "https://storage.googleapis.com/symbiflow-arch-defs-gha/symbiflow-benchmarks-latest"
+}
+
+SYMBIFLOW_URL_MIRRORS = {"google": GCS_URL}
+
+
+class ExtractionError(Exception):
+    """
+    Extraction error exception class
+    """
+
+
+def parse_args():
+    """
+    Parses and returns script's arguments
+    """
+
+    description = textwrap.dedent(
+        """
+            Download and extract a symbiflow benchmark release into a
+            VTR-style directory structure.
+
+            If a previous matching symbiflow release tar.gz file is found
+            does nothing (unless --force is specified).
+        """
+    )
+    parser = argparse.ArgumentParser(
+        formatter_class=argparse.ArgumentDefaultsHelpFormatter, description=description
+    )
+
+    parser.add_argument(
+        "--vtr_flow_dir",
+        required=True,
+        help="The 'vtr_flow' directory under the VTR tree. "
+        "If specified this will extract the symbiflow release, "
+        "placing benchmarks under vtr_flow/benchmarks/symbiflow ",
+    )
+    parser.add_argument(
+        "--force",
+        default=False,
+        action="store_true",
+        help="Run extraction step even if directores etc. already exist",
+    )
+
+    parser.add_argument("--mirror", default="google", choices=["google"], help="Download mirror")
+
+    parser.add_argument(
+        "--upgrade_archs",
+        action="store_true",
+        default=True,
+        help="Try to upgrade included architecture files (using the upgrade_archs.py)",
+    )
+
+    return parser.parse_args()
+
+
+def main():
+    """
+    Main function
+    """
+
+    args = parse_args()
+
+    try:
+        urls = SYMBIFLOW_URL_MIRRORS[args.mirror]
+        archs_tar_xz_url = urls["architectures"]
+        benchmarks_tar_xz_url = urls["benchmarks"]
+
+        archs_tar_xz_filename = "archs_symbiflow.tar.xz"
+        benchmarks_tar_xz_filename = "benchmarks_symbiflow.tar.xz"
+
+        print("Downloading architectures {}".format(archs_tar_xz_url))
+        download_url(archs_tar_xz_filename, archs_tar_xz_url)
+
+        print("Extracting architectures {}".format(archs_tar_xz_filename))
+        symbiflow_data_dir = "share/symbiflow/arch/xc7a50t_test"
+        extract_to_vtr_flow_dir(args, archs_tar_xz_filename, "arch", symbiflow_data_dir)
+
+        print("Downloading benchmarks {}".format(benchmarks_tar_xz_url))
+        download_url(benchmarks_tar_xz_filename, benchmarks_tar_xz_url)
+
+        print("Extracting benchmarks {}".format(benchmarks_tar_xz_filename))
+        extract_to_vtr_flow_dir(args, benchmarks_tar_xz_filename, "benchmarks")
+
+    except ExtractionError as error:
+        print("Failed to extract data: ", error)
+        sys.exit(1)
+
+    sys.exit(0)
+
+
+def download_url(filename, url):
+    """
+    Downloads the symbiflow release
+    """
+    latest_package_url = request.urlopen(url).read().decode("utf-8")
+    print("Downloading latest package:\n{}".format(latest_package_url))
+    request.urlretrieve(latest_package_url, filename, reporthook=download_progress_callback)
+
+
+def download_progress_callback(block_num, block_size, expected_size):
+    """
+    Callback for urllib.urlretrieve which prints a dot for every percent of a file downloaded
+    """
+    total_blocks = int(math.ceil(expected_size / block_size))
+    progress_increment = int(math.ceil(total_blocks / 100))
+
+    if block_num % progress_increment == 0:
+        sys.stdout.write(".")
+        sys.stdout.flush()
+    if block_num * block_size >= expected_size:
+        print("")
+
+
+def extract_to_vtr_flow_dir(args, tar_xz_filename, destination, extract_path=""):
+    """
+    Extracts the 'benchmarks' directory of the symbiflow release
+    into its corresponding vtr directory
+    """
+
+    # Reference directories
+    dest_dir = os.path.join(args.vtr_flow_dir, destination)
+    symbiflow_extract_dir = os.path.join(dest_dir, "symbiflow")
+
+    if not args.force:
+        # Check that all expected directories exist
+        expected_dirs = [
+            args.vtr_flow_dir,
+            symbiflow_extract_dir,
+        ]
+        for directory in expected_dirs:
+            if not os.path.isdir(directory):
+                raise ExtractionError("{} should be a directory".format(directory))
+
+    # Create a temporary working directory
+    tmpdir = tempfile.mkdtemp(suffix="download_symbiflow", dir=".")
+
+    # Extract matching files into the temporary directory
+    subprocess.call(
+        "tar -C {} -xf {} {}".format(tmpdir, tar_xz_filename, extract_path),
+        shell=True,
+    )
+
+    # Move the extracted files to the relevant directories, SDC files first (since we
+    # need to look up the BLIF name to make it match)
+    for dirpath, _, filenames in os.walk(tmpdir):
+        for filename in filenames:
+            src_file_path = os.path.join(dirpath, filename)
+            dst_file_path = None
+
+            if fnmatch.fnmatch(src_file_path, "*/xc7a50t_test/arch.timing.xml"):
+                dst_file_path = os.path.join(symbiflow_extract_dir, "arch.timing.xml")
+
+            elif fnmatch.fnmatch(src_file_path, "*/xc7a50t_test/*.bin"):
+                dst_file_path = os.path.join(symbiflow_extract_dir, filename)
+
+            elif fnmatch.fnmatch(src_file_path, "**/*.eblif"):
+                dst_file_path = os.path.join(symbiflow_extract_dir, filename)
+
+            elif fnmatch.fnmatch(src_file_path, "**/*.sdc"):
+                dst_file_path = os.path.join(symbiflow_extract_dir, "sdc", filename)
+
+            elif fnmatch.fnmatch(src_file_path, "**/*.place"):
+                dst_file_path = os.path.join(symbiflow_extract_dir, "place_constr", filename)
+
+            if dst_file_path:
+                shutil.move(src_file_path, dst_file_path)
+
+    shutil.rmtree(tmpdir)
+
+    print("Done")
+
+
+if __name__ == "__main__":
+    main()