https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91030
--- Comment #22 from David Edelsohn <dje at gcc dot gnu.org> --- The following are unofficial results on an unspecified system running GPFS. These should not be considered official anything and should not be referenced for benchmarking. Test using 2.500000e+08 doubles Block size of file system: 16777216 bs = 1024, 126.53 MiB/s bs = 2048, 218.69 MiB/s bs = 4096, 335.00 MiB/s bs = 8192, 436.25 MiB/s bs = 16384, 774.91 MiB/s bs = 32768, 619.28 MiB/s bs = 65536, 1018.89 MiB/s bs = 131072, 659.44 MiB/s bs = 262144, 629.90 MiB/s bs = 524288, 1111.63 MiB/s bs = 1048576, 678.90 MiB/s bs = 2097152, 1029.28 MiB/s bs = 4194304, 668.27 MiB/s bs = 8388608, 662.53 MiB/s bs = 16777216, 1111.37 MiB/s bs = 33554432, 694.28 MiB/s bs = 67108864, 1091.94 MiB/s