Hi Michele, On 16-09-2021 02:40, Michele Martone wrote: > Dear Paul, > > The problem seems librsb-sided. > > Assuming librsb fails at detecting cache memory size, maybe can you > first export e.g. > RSB_USER_SET_MEM_HIERARCHY_INFO="L2:4/64/512K,L1:8/64/32K" > and see if this avoids that? > Same with > OMP_NUM_THREADS=1 > explicitly? > > Maybe you send me outputs of `rsbench -C` and `rsbench -I` ? See below. By the way, I'm surprised to see negative free memory reported there. Is that an integer overflow bug? We have 255GB memory on this machine and nearly all of it is free. > If I had a guest account to such an armhf machine it would be a bit > easier. If I'm correct you're not a DD, but if there's a DD that is willing to support your request, I can temporarily give you access if really needed. Paul root@autopkgtest-lxc-bexxro:/tmp/autopkgtest-lxc.ghhdpc6_/downtmp/build.J9f/src# lsmem RANGE SIZE STATE REMOVABLE BLOCK 0x0000000080000000-0x00000000bfffffff 1G online yes 2 0x0000080000000000-0x000008007fffffff 2G online yes 8192-8193 0x00000800c0000000-0x0000081fffffffff 125G online yes 8195-8319 0x0000400000000000-0x00004000bfffffff 3G online yes 65536-65538 0x0000400100000000-0x0000401fffffffff 124G online yes 65540-65663 Memory block size: 1G Total online memory: 255G Total offline memory: 0B root@autopkgtest-lxc-bexxro:/tmp/autopkgtest-lxc.ghhdpc6_/downtmp/build.J9f/src# rsbench -CERROR 0xfffffc00 : The requested feature (e.g.:blocking) is not available because it was opted out or not configured at built time. root@autopkgtest-lxc-bexxro:/tmp/autopkgtest-lxc.ghhdpc6_/downtmp/build.J9f/src# rsbench -I hwloc size of cache level 1: 65536 hwloc size of cache level 2: 1048576 detected max available cores/threads : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected max OpenMP procs : 160 detected 2 levels of cache L1 size: 65536 L2 size: 1048576 sysconf() : 4096 bytes per pagesize sysconf() : 65553496 physical pages sysconf() : -2075820032 bytes (2116 MB) of physical memory sysconf() : 38395759 available (free) physical pages sysconf() : -1644761088 available (free) physical memory sysconf() , processors : 160 sysconf() , processors online : 160 sysconf() : no level 1 cache sysconf() : no level 2 cache sysconf() : no level 3 cache sysconf() : no level 4 cache 8 bits per byte. Good. cache block size : 16384 SHRT_MAX : 32767 SHRT_MIN : -32768 USHRT_MAX : 65535 INT_MIN : -2147483648 INT_MAX : 2147483647 UINT_MAX : 4294967295 LONG_MAX : 2147483647 LONG_MIN : -2147483648 ULONG_MAX : 4294967295 LLONG_MAX : 9223372036854775807 LLONG_MIN : -9223372036854775808 ULLONG_MAX : 18446744073709551615 RSB_MARKER_COO_VALUE : 2147483138 RSB_MARKER_NNZ_VALUE : 2147483393 RSB_SUBM_IDX_MARKER : 2147483647 RSB_MAX_ALLOCATABLE_MEMORY_CHUNK: 4294967295 timing min delta (if negative, don't complain with us) : 0 s timing granularity : 2.09045e-07 s CFLAGS : -g -O2 -fdebug-prefix-map=/build/librsb-SgJkYm/librsb-1.2.0.9+real+dfsg=. -fstack-protector-strong -Wformat -Werror=format-security -O3 -fopenmp -std=c99 CC : gcc memhinfo : detected free memory : -537382912 detected total memory : -2075820032 for array sized 1048576 elems, took 0.00075078 s for linear search and 0 s for binary search for element 1048575, in 130 tries, for a total of 0.100455 s (ignore this:272629500) for array sized 1048576 elems, took 0.00037694 s for linear search and 0 s for binary search for element 524287, in 265 tries, for a total of 0.100251 s (ignore this:550501610) for array sized 1048576 elems, took 0.000187874 s for linear search and 0 s for binary search for element 262143, in 526 tries, for a total of 0.100105 s (ignore this:826276046) for array sized 1048576 elems, took 9.39369e-05 s for linear search and 0 s for binary search for element 131071, in 1053 tries, for a total of 0.100006 s (ignore this:1102311572) for array sized 1048576 elems, took 4.69685e-05 s for linear search and 0 s for binary search for element 65535, in 2091 tries, for a total of 0.100000 s (ignore this:1376378942) for array sized 1048576 elems, took 2.28882e-05 s for linear search and 0 s for binary search for element 32767, in 4143 tries, for a total of 0.100014 s (ignore this:1647886304) for array sized 1048576 elems, took 1.19209e-05 s for linear search and 0 s for binary search for element 16383, in 8036 tries, for a total of 0.100005 s (ignore this:1911193880) for array sized 1048576 elems, took 5.96046e-06 s for linear search and 0 s for binary search for element 8191, in 15770 tries, for a total of 0.100005 s (ignore this:-2125429276) for array sized 1048576 elems, took 2.86102e-06 s for linear search and 0 s for binary search for element 4095, in 29452 tries, for a total of 0.100004 s (ignore this:-1884217396) for array sized 1048576 elems, took 9.53674e-07 s for linear search and 0 s for binary search for element 2047, in 51904 tries, for a total of 0.100002 s (ignore this:-1671722420) for array sized 1048576 elems, took 0 s for linear search and 0 s for binary search for element 1023, in 83699 tries, for a total of 0.100001 s (ignore this:-1500474266) for array sized 1048576 elems, took 0 s for linear search and 0 s for binary search for element 511, in 120697 tries, for a total of 0.100000 s (ignore this:-1377121932) for array sized 1048576 elems, took 0 s for linear search and 0 s for binary search for element 255, in 158290 tries, for a total of 0.100000 s (ignore this:-1296394032) for array sized 1048576 elems, took 0 s for linear search and 0 s for binary search for element 127, in 185535 tries, for a total of 0.100000 s (ignore this:-1249268142) for array sized 1048576 elems, took 0 s for linear search and 0 s for binary search for element 63, in 203323 tries, for a total of 0.100001 s (ignore this:-1223649444) for array sized 1048576 elems, took 0 s for linear search and 0 s for binary search for element 31, in 212915 tries, for a total of 0.100001 s (ignore this:-1210448714) for array sized 1048576 elems, took 0 s for linear search and 0 s for binary search for element 15, in 218689 tries, for a total of 0.100001 s (ignore this:-1203888044) for array sized 1048576 elems, took 0 s for linear search and 0 s for binary search for element 7, in 222139 tries, for a total of 0.100001 s (ignore this:-1200778098)
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