Files
b210-k7-fpga/tools/utils/repeat_fpga_build.py
T
Martin Braun 1a3bdccd51 Revert "Get rid of unnecessary bash wrappers in subprocesses.Popen"
This reverts commit e572bab3ee5aa40f57bdc6e11d6381cad1d1401a.

The problem with skipping the "unnecessary" bash wrappers is that Ubuntu
systems use 'dash' as a default shell, which does not support our build
infrastructure. While we do recommend not using dash for building FPGA
builds in our documentation, it's not obvious that dash is the problem
when calling rfnoc_image_builder.


Original-commit: 888850d6417c93f561e0555c693e3f11e9f40856
2025-02-20 10:24:16 +01:00

609 lines
19 KiB
Python
Executable File

#!/usr/bin/env python3
#
# Copyright 2023 Ettus Research, a National Instrument Brand
#
# SPDX-License-Identifier: GPL-3.0-or-later
#
"""
Repeatedly runs the requested build until it builds successfully and meets
timing, up to a maximum number of tries. Builds will be retried when they
fail with timing errors or other errors that might not reoccur. Builds will
stop if a an unrecognized error occurs.
"""
import sys
import os
import signal
import time
import argparse
import subprocess
import threading
import logging
import re
import random
from enum import Enum
# Delay between build status checks
SLEEP_DELAY = 3
class Status(Enum):
# Build status constants. Values can be returned to shell as error codes.
SUCCESS = 0
ERROR_TRANSIENT = 1
ERROR_UNKNOWN = 2
CANCELLED = 3
TIMEOUT = 4
NONE = 5
def __str__(self):
"""Returns a pretty string for each enum."""
status_string = {
self.SUCCESS: "Success",
self.ERROR_TRANSIENT: "Error (Transient)",
self.ERROR_UNKNOWN: "Error (Unknown)",
self.CANCELLED: "Cancelled",
self.TIMEOUT: "Timeout",
self.NONE: "Not Started",
}
return status_string[self]
class Worker:
"""Information for a single worker."""
def __init__(self):
self.status = None
self.thread = None
self.process = None
self.start_time = None
class Workers:
"""A set of workers and methods for adding and checking the status of workers."""
def __init__(self):
self.thread_lock = threading.Lock()
self.worker_list = []
def new(self):
"""Create a new worker and returns its index."""
with self.thread_lock:
new_worker = Worker()
self.worker_list.append(new_worker)
num = len(self.worker_list) - 1
return num
def set(self, index, status=None, thread=None, process=None, start_time=None):
"""Set the status of a worker.
Args:
index:
The index for the worker to update.
status:
If not None, set status to Status.SUCCESS, Status.ERROR_UNKNOWN, etc.
thread:
If not None, set thread to a Thread object.
process:
If not None, set process to a Popen object.
start_time:
If not None, set start_time to time worker started, in seconds.
"""
with self.thread_lock:
if status is not None:
self.worker_list[index].status = status
if thread is not None:
self.worker_list[index].thread = thread
if process is not None:
self.worker_list[index].process = process
if start_time is not None:
self.worker_list[index].start_time = start_time
def status(self, index):
"""Returns the status of the indicated worker."""
with self.thread_lock:
return self.worker_list[index].status
def num_workers(self):
"""Return the total number of workers."""
with self.thread_lock:
return len(self.worker_list)
def num_finished(self):
"""Return the number of workers that have finished."""
with self.thread_lock:
return sum(int(w.status is not None) for w in self.worker_list)
def num_error_unknown(self):
"""Return the number of workers that finished with an unknown error."""
with self.thread_lock:
return sum(int(w.status == Status.ERROR_UNKNOWN) for w in self.worker_list)
def any_success(self):
"""Returns True if any worker finished successfully."""
with self.thread_lock:
return any(
not w.thread.is_alive() and w.status == Status.SUCCESS
for w in self.worker_list
)
def check_timeout(self, timeout):
"""Check the timeout status of each worker. Kill it if timeout has
expired.
Args:
timeout: The timeout in seconds.
"""
with self.thread_lock:
for index, worker in enumerate(self.worker_list):
if time.time() - worker.start_time > timeout and worker.status == None:
try:
self.worker_list[index].status = Status.TIMEOUT
os.killpg(os.getpgid(worker.process.pid), signal.SIGTERM)
except ProcessLookupError:
# Process is already dead
pass
def kill_jobs(self):
"""Kill any running jobs by sending SIGTERM to each process group."""
with self.thread_lock:
for index, worker in enumerate(self.worker_list):
if worker.status == None:
try:
self.worker_list[index].status = Status.CANCELLED
os.killpg(os.getpgid(worker.process.pid), signal.SIGTERM)
except ProcessLookupError:
# Process is already dead
pass
def parse_args():
"""Parse the command line arguments.
Returns:
Populated namespace containing the arguments and their values.
"""
parser = argparse.ArgumentParser(
description=__doc__, formatter_class=argparse.ArgumentDefaultsHelpFormatter
)
parser.add_argument(
"--target",
"-t",
type=str,
help="FPGA make target to build (e.g., X310_XG).",
)
parser.add_argument(
"--image-core",
"-y",
type=str,
help="For using the image builder instead of make, use this to specify "
"the image core YAML.",
)
parser.add_argument(
"--image-core-name",
type=str,
help="Specifies the image core name to pass to rfnoc_image_builder using the -n argument.",
)
parser.add_argument(
"--fpga-dir",
"-F",
type=str,
default=None,
required=False,
help="Specifies the FPGA directory to pass to rfnoc_image_builder using the -F argument.",
)
parser.add_argument(
"--build-dir",
"-B",
type=str,
default=None,
required=False,
help="Specifies the build directory to pass to rfnoc_image_builder using the -B argument.",
)
parser.add_argument(
"--vivado-path",
"-P",
help="Path to the base install for Xilinx Vivado if not in default "
"location (e.g., /tools/Xilinx/Vivado).",
default=None,
)
parser.add_argument(
"--ignore-warnings",
"-W",
help="Run build even when there are warnings from the RFNoC image builder",
action="store_true",
)
parser.add_argument(
"--num",
"-n",
type=int,
default=4,
required=False,
help="Number of times to attempt the build.",
)
parser.add_argument(
"--persistent",
"-p",
action="store_true",
default=False,
help=(
"Continue retrying builds regardless of which error occurs, "
"up to the specified number of attempts."
),
)
parser.add_argument(
"--seed",
"-s",
type=int,
default=0,
required=False,
help="Initial seed value to use.",
)
parser.add_argument(
"--fpga-jobs",
"-j",
type=int,
default=1,
required=False,
help="Number of parallel FPGA build jobs to run.",
)
parser.add_argument(
"--ip-jobs",
"-J",
type=int,
default=4,
required=False,
help="Number of parallel IP build jobs to run.",
)
parser.add_argument(
"--timeout",
"-T",
type=float,
default=0,
help=("Set a timeout in hours for each build attempt. Use 0 for no timeout."),
)
parser.add_argument(
"--all",
"-a",
action="store_true",
default=False,
help=(
"Complete all builds, even after a successful build is completed, "
"unless an unknown error occurs."
),
)
parser.add_argument(
"--index",
"-i",
type=int,
required=False,
default=1,
help=(
"Starting index for the number to be appended to each parallel "
"build's directory name."
),
)
return parser.parse_args()
def rfnoc_image_builder_cmd(
build_seed,
target,
image_core,
image_core_name,
fpga_dir,
build_dir,
vivado_path,
ignore_warnings,
build_num=None,
):
"""
Build the RFNoC image builder command for this build
"""
cmd = ""
if build_seed is not None:
cmd += f"BUILD_SEED={build_seed} "
cmd += f"rfnoc_image_builder --yaml-config {image_core} "
if target:
cmd += f"--target {target} "
if image_core_name:
cmd += f"--image-core-name {image_core_name}"
cmd += " " if build_num == None else f"_{build_num:02} "
if build_dir:
cmd += f"--build-dir {build_dir}"
cmd += " " if build_num == None else f"/{image_core_name}_{build_num:02} "
if fpga_dir:
cmd += f"--fpga-dir {fpga_dir} "
if vivado_path:
cmd += f"--vivado-path {vivado_path} "
if ignore_warnings:
cmd += "--ignore-warnings "
return cmd
def run_fpga_build(
workers,
worker_num,
build_num,
build_seed,
target,
image_core,
image_core_name,
fpga_dir,
build_dir,
vivado_path,
ignore_warnings,
parallel_builds,
):
"""Performs one iteration of an FPGA build.
Args:
workers: Workers object containing the state of all workers
woker_num: The number ID for this worker
build_num: Build number to be displayed for this build
build_seed: 32-bit signed integer to seed the FPGA build
target: --target argument to be passed
image_core: --image-core argument to be passed
image_core_name: --image-core-name argument to be passed
fpga_dir: --fpga-dir argument to be passed
build_dir: --build-dir argument to be passed
vivado_path: --vivado-path argument to be passed
ignore_warnings: --ignore-warnings argument to be passed
parallel_builds: Indicates if we are doing builds in parallel
Returns:
Status.SUCCESS: The build succeeded
Status.*: The build failed for the indicated reason
"""
logging.info(f"Starting FPGA build {build_num} with seed {build_seed}")
output = ""
# Give each build a unique directory number if doing parallel builds
cmd_build_num = build_num if parallel_builds else None
cmd = rfnoc_image_builder_cmd(
build_seed,
target,
image_core,
image_core_name,
fpga_dir,
build_dir,
vivado_path,
ignore_warnings,
cmd_build_num,
)
logging.info(f"Running FPGA build command: {cmd}")
with subprocess.Popen(
cmd,
shell=True,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
bufsize=1,
universal_newlines=True,
start_new_session=True,
) as proc:
workers.set(worker_num, process=proc)
prefix = f"[{build_num:02}] "
for line in proc.stdout:
print(prefix + line, end="")
output += line
if proc.returncode == 0:
logging.info(f"Finished FPGA build {build_num} (SUCCESS)")
status = Status.SUCCESS
elif workers.status(worker_num) in (Status.CANCELLED, Status.TIMEOUT):
status = workers.status(worker_num)
logging.info((f"Finished FPGA build {build_num} ({str(status)})"))
else:
# Regular expressions for error strings to search for that would tell
# us we should try again.
transient_errors = [
# Standard timing error:
"The design did not satisfy timing constraints",
# Known issue fixed in Vivado 2021.2:
(
"Router encountered a fatal exception of type .*"
"Trying to tool lock on already tool locked arc"
),
]
logging.info(f"Finished FPGA build {build_num} (FAILURE)")
status = Status.ERROR_UNKNOWN
for error_string in transient_errors:
if re.search(error_string, output):
status = Status.ERROR_TRANSIENT
break
workers.set(worker_num, status=status)
return status
def run_ip_build(
ip_jobs,
target,
image_core,
image_core_name,
fpga_dir,
build_dir,
vivado_path,
ignore_warnings,
):
"""Performs the IP build.
This is done separately so that when we do parallel FPGA builds, they don't
separately launch IP builds that would clobber each other.
Args:
ip_jobs: Number or parallel jobs to use for IP build
target: --target argument to be passed
image_core: --image-core argument to be passed
image_core_name: --image-core-name argument to be passed
fpga_dir: --fpga-dir argument to be passed
build_dir: --build-dir argument to be passed
vivado_path: --vivado-path argument to be passed
ignore_warnings: --ignore-warnings argument to be passed
Returns:
0: The IP build succeeded
non-zero: The IP build failed
"""
cmd = rfnoc_image_builder_cmd(
None,
target,
image_core,
image_core_name,
fpga_dir,
build_dir,
vivado_path,
ignore_warnings,
None,
)
cmd += f" --ip-only --jobs {ip_jobs}"
logging.info(f"Running IP build with command: {cmd}")
output = ""
with subprocess.Popen(
f'/bin/bash -c "{cmd}"',
shell=True,
stdout=subprocess.PIPE,
stderr=subprocess.STDOUT,
bufsize=1,
universal_newlines=True,
) as proc:
for line in proc.stdout:
print(line, end="")
output += line
if proc.returncode != 0:
logging.error("IP build failed! Consult output for details.")
return Status.ERROR_UNKNOWN
return Status.SUCCESS
def next_build_seed(previous_seed):
"""Determines the next seed to use based on the previous seed. This creates
a reproducible sequence of values with a specific initial value.
Args:
previous_seed: The previous integer seed from which to determine the
new seed.
Returns:
The next build seed value in the range of a 32-bit signed integer.
"""
random.seed(previous_seed)
return random.randint(-0x80000000, 0x7FFFFFFF)
def main():
"""Run the requested builds.
Returns:
The status of the build as an integer, based on the Status enum (0 if
successful, non-zero if the build failed).
"""
logging.basicConfig(format="[REPEAT BUILD][%(levelname)s] %(message)s")
logging.root.setLevel(logging.INFO)
args = parse_args()
if not args.target and not args.image_core:
logging.error("Either --target or --image-core must be provided!")
return Status.NONE.value
build_seed = args.seed
workers = Workers()
if args.fpga_jobs > 1 and not args.image_core_name:
logging.error(
"You must provide --image-core-name when doing parallel FPGA "
"builds. Each build will use this name followed by a build number."
)
return Status.NONE.value
# Build all the IP first, so it's ready to go for any parallel FPGA builds
status = run_ip_build(
args.ip_jobs,
args.target,
args.image_core,
args.image_core_name,
args.fpga_dir,
args.build_dir,
args.vivado_path,
args.ignore_warnings,
)
if status != Status.SUCCESS:
return status.value
# Run the FPGA builds next
status = Status.NONE
try:
while True:
# See if we can start another build job
if (
threading.active_count() < args.fpga_jobs + 1
and workers.num_workers() < args.num
):
worker_num = workers.new()
build_num = worker_num + args.index
thread = threading.Thread(
target=run_fpga_build,
args=(
workers,
worker_num,
build_num,
build_seed,
args.target,
args.image_core,
args.image_core_name,
args.fpga_dir,
args.build_dir,
args.vivado_path,
args.ignore_warnings,
args.fpga_jobs > 1,
),
)
workers.set(worker_num, thread=thread, start_time=time.time())
thread.start()
build_seed = next_build_seed(build_seed)
else:
# We've maxed out the number of workers/jobs, so check the
# status periodically.
time.sleep(SLEEP_DELAY)
if args.timeout > 0:
workers.check_timeout(args.timeout * 3600)
if workers.any_success():
if not args.all or workers.num_finished() == args.num:
break
elif workers.num_finished() == args.num:
break
# We're done, so kill any remaining jobs that haven't finished
if threading.active_count() > 1:
logging.info("Stopping remaining jobs . . .")
workers.kill_jobs()
while threading.active_count() > 1:
time.sleep(0.1)
# Print the results before returning
logging.info(f"Build Summary:")
for worker_num in range(workers.num_workers()):
logging.info(
f" - Build attempt {args.index + worker_num}: {str(workers.status(worker_num))}"
)
if workers.any_success():
status = Status.SUCCESS
elif workers.num_finished() == args.num:
status = Status.ERROR_TRANSIENT
logging.error("Reached maximum number of FPGA build attempts")
elif workers.num_error_unknown() != 0 and args.stop_on_error:
status = Status.ERROR_UNKNOWN
logging.error("Stopped due to unexpected FPGA build error")
except KeyboardInterrupt:
logging.info("Received SIGINT. Aborting . . .")
workers.kill_jobs()
while threading.active_count() > 1:
time.sleep(0.1)
# Return normal Bash value for SIGINT (128+2)
return 130
return status.value
if __name__ == "__main__":
sys.exit(main())