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|
#!/bin/bash
# SPDX-License-Identifier: BSD-3-Clause
#
# soak.sh - CUDA client soak runner for the vGPU guest.
#
# Usage:
# tools/cuda-ab/soak.sh <seconds> [guest_dir] # soak for <seconds>
# tools/cuda-ab/soak.sh --seq [guest_dir] # one pass over all clients
#
# The client set (victory_mail, smiley, vecadd_loop, streams2,
# memcpy_roundtrip, multikernel plus the victory series: victory_saxpy,
# victory_reduce, victory_matmul, victory_strided, victory_memset2d,
# victory_atomics, victory_streams_events, victory_math) runs in the guest
# one at a time via scripts/ssh_guest.sh. Clients whose binary is missing
# from <guest_dir> (default /tmp) are skipped. A client that does not print
# STATUS OK within SOAK_TIMEOUT seconds (default 240) stops the soak with a
# SOAK FAILED line.
#
# Every run is recorded as a timestamped line per run in
# /tmp/opencode/soak-<stamp>/results.log; the full client output of each run
# is kept next to it as out-r<round>-<client>.txt.
#
# Environment overrides:
# SOAK_TIMEOUT per-client seconds in the guest (default 240)
# SSH_CMD guest ssh wrapper (default <repo>/scripts/ssh_guest.sh)
#
# Examples:
# tools/cuda-ab/soak.sh 3600 # 1 h continuous battery
# tools/cuda-ab/soak.sh --seq # single pass, quick check
set -u
HERE="$(cd "$(dirname "$0")" && pwd)"
REPO="$(cd "$HERE/../.." && pwd)"
SSH="${SSH_CMD:-$REPO/scripts/ssh_guest.sh}"
TMO="${SOAK_TIMEOUT:-240}"
CLIENTS="victory_mail smiley vecadd_loop streams2 memcpy_roundtrip multikernel victory_saxpy victory_reduce victory_matmul victory_strided victory_memset2d victory_atomics victory_streams_events victory_math"
MODE=soak
if [ "${1:-}" = "--seq" ]; then
MODE=seq
SECS=0
GUEST_DIR="${2:-/tmp}"
else
SECS="${1:-}"
GUEST_DIR="${2:-/tmp}"
fi
usage() {
echo "usage: $0 <seconds> [guest_dir]" >&2
echo " $0 --seq [guest_dir]" >&2
exit 1
}
[ -x "$SSH" ] || { echo "ssh wrapper not found: $SSH" >&2; exit 1; }
if [ "$MODE" = soak ]; then
case "$SECS" in
''|*[!0-9]*) usage ;;
esac
[ "$SECS" -gt 0 ] || usage
fi
STAMP="$(date +%Y%m%d-%H%M%S)"
LOGDIR="/tmp/opencode/soak-$STAMP"
mkdir -p "$LOGDIR"
RESULTS="$LOGDIR/results.log"
START=$(date +%s)
DEADLINE=$((START + SECS))
log() {
printf '%s %s\n' "$(date '+%Y-%m-%dT%H:%M:%S%z')" "$*" | tee -a "$RESULTS"
}
# gssh_raw - one guest command, no retry (safe only for idempotent commands).
gssh_raw() {
timeout 60 "$SSH" "$1" 2>/dev/null
}
# gssh - idempotent guest command, retried for flaky ssh.
gssh() {
local i out
for i in 1 2 3; do
out="$(gssh_raw "$1")" && { printf '%s' "$out"; return 0; }
sleep 2
done
return 1
}
# start_client <name> <round> - launch under remote `timeout`, output to a
# per-round file ending in EXIT=<rc>. The first attempt launches
# unconditionally; retries only re-launch if the output file is absent, so a
# dropped ssh stream cannot cause a double run.
start_client() {
local name="$1" round="$2" bin="$GUEST_DIR/$1"
local out="$GUEST_DIR/.soak-$1-r$round.out" i r
for i in 1 2 3; do
if [ "$i" = 1 ]; then
r="$(gssh_raw "rm -f $out; nohup sh -c 'timeout $TMO $bin > $out 2>&1; echo EXIT=\$? >> $out' >/dev/null 2>&1 & echo STARTED")" || r=""
else
r="$(gssh_raw "if [ -f $out ]; then echo STARTED; else rm -f $out; nohup sh -c 'timeout $TMO $bin > $out 2>&1; echo EXIT=\$? >> $out' >/dev/null 2>&1 & echo STARTED; fi")" || r=""
fi
case "$r" in
*STARTED*) return 0 ;;
esac
sleep 3
done
return 1
}
# client_alive <bin> - pgrep without self-match ([/] in the pattern keeps the
# remote check shell - whose argv contains the pattern text - from matching).
client_alive() {
local pat="[/]${1#/}"
gssh "pgrep -f '$pat' >/dev/null && echo ALIVE" | grep -q ALIVE
}
# run_one <name> <round> - returns 0 when STATUS OK was seen, 1 otherwise.
run_one() {
local name="$1" round="$2" bin="$GUEST_DIR/$1"
local out="$GUEST_DIR/.soak-$1-r$round.out"
local text="" r="" i t0 tnow dur rc reason
t0=$(date +%s)
log "RUN client=$name round=$round timeout=${TMO}s"
if ! start_client "$name" "$round"; then
log "FAILED client=$name round=$round reason=ssh-launch-failed"
return 1
fi
while :; do
sleep 10
r="$(gssh "cat $out 2>/dev/null")" || true
[ -n "$r" ] && text="$r"
printf '%s' "$text" | grep -q 'EXIT=' && break
tnow=$(date +%s)
if [ $((tnow - t0)) -gt $((TMO + 120)) ]; then
if client_alive "$bin"; then
log "FAILED client=$name round=$round reason=still-running-after-$((tnow - t0))s"
else
log "FAILED client=$name round=$round reason=process-gone-without-exit-marker"
fi
return 1
fi
done
tnow=$(date +%s)
dur=$((tnow - t0))
# Flaky-ssh guard: retry the final status read a few times.
for i in 1 2 3; do
r="$(gssh "cat $out 2>/dev/null")" || true
if printf '%s' "$r" | grep -q 'EXIT='; then
text="$r"
break
fi
sleep 2
done
rc=$(printf '%s' "$text" | sed -n 's/.*EXIT=\([0-9][0-9]*\).*/\1/p' | tail -1)
[ -n "$rc" ] || rc=?
printf '%s\n' "$text" > "$LOGDIR/out-r${round}-${name}.txt"
if printf '%s' "$text" | grep -q 'STATUS OK'; then
log "OK client=$name rc=$rc dur=${dur}s round=$round"
return 0
fi
reason="$(printf '%s' "$text" | grep -E 'STATUS FAIL|CUDA_ERROR' | head -1)"
[ -n "$reason" ] || reason="no STATUS OK in output"
log "FAILED client=$name rc=$rc dur=${dur}s round=$round reason=$reason"
return 1
}
log "SOAK START mode=$MODE seconds=$SECS guest_dir=$GUEST_DIR timeout=${TMO}s logdir=$LOGDIR"
# Which clients are present in the guest? Retry the listing so a flaky ssh
# cannot silently shrink the battery.
found=""
for i in 1 2 3; do
found="$(gssh "for b in $CLIENTS; do [ -x $GUEST_DIR/\$b ] && echo \$b; done")" || found=""
[ -n "$found" ] && break
sleep 3
done
if [ -z "$found" ]; then
log "SOAK FAILED reason=no-client-binaries-in-$GUEST_DIR"
exit 1
fi
log "CLIENTS $(printf '%s' "$found" | tr '\n' ' ')"
round=0
runs=0
oks=0
while :; do
[ "$MODE" = soak ] && [ "$(date +%s)" -ge "$DEADLINE" ] && break
round=$((round + 1))
stopped=0
for c in $found; do
if [ "$MODE" = soak ] && [ "$(date +%s)" -ge "$DEADLINE" ]; then
stopped=1
break
fi
if ! run_one "$c" "$round"; then
log "SOAK FAILED client=$c round=$round runs=$runs ok=$oks"
exit 1
fi
runs=$((runs + 1))
oks=$((oks + 1))
done
[ "$MODE" = seq ] && break
[ "$stopped" = 1 ] && break
done
log "SOAK DONE mode=$MODE rounds=$round runs=$runs ok=$oks elapsed=$(( $(date +%s) - START ))s"
exit 0
|
