From 749d91ee2c96fc2d7e413d0cde294037e75f3f9a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Miroslav=20Such=C3=BD?= Date: Mon, 17 Aug 2026 22:16:59 +0200 Subject: [PATCH] Improve paralellism on multisocket CPU Current formula counts CPUs in first socket only. This change counts all physical cores in all sockets. I have system with two socket (each of them has 28 cores. As result the job is running with `-j 28` instead of `-j 112` and building at 25% utilization. --- python-torch.spec | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/python-torch.spec b/python-torch.spec index e9e522d..a0530ef 100644 --- a/python-torch.spec +++ b/python-torch.spec @@ -632,7 +632,7 @@ sed -i -e 's@USE_MSLK_DEFAULT ON@USE_MSLK_DEFAULT OFF@' CMakeLists.txt # %ifarch x86_64 # Real cores, No hyperthreading -COMPILE_JOBS=`cat /proc/cpuinfo | grep -m 1 'cpu cores' | awk '{ print $4 }'` +COMPILE_JOBS=`lscpu -p=CORE | grep -v '^#' | sort -u |wc -l` %else # cpuinfo format varies on other arches, fall back to nproc COMPILE_JOBS=`nproc`