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Failure in math/test-float-vlen8-avx2-log.out
- From: Paul Pluzhnikov <ppluzhnikov at google dot com>
- To: GLIBC Devel <libc-alpha at sourceware dot org>
- Date: Sat, 19 May 2018 13:04:46 -0700
- Subject: Failure in math/test-float-vlen8-avx2-log.out
- References: <CAPC3xarhW9odKuqaao5dS4jaeaDrYQqpPsABvoO1rGWJmLt=OA@mail.gmail.com>
Greetings,
I am seeing failure in math/test-float-vlen8-avx2-log.
Is that a real failure, or should ulps be updated?
Thanks,
$ cat math/test-float-vlen8-avx2-log.out
testing float (vector length 8)
Failure: Test: log_vlen8_avx2 (0xb.0d5dfp-4)
Result:
is: -3.69957983e-01 -0x1.7ad644p-2
should be: -3.69957894e-01 -0x1.7ad63ep-2
difference: 8.94069672e-08 0x1.800000p-24
ulp : 3.0000
max.ulp : 2.0000
Maximal error of `log_vlen8_avx2'
is : 3 ulp
accepted: 2 ulp
Test suite completed:
36 test cases plus 0 tests for exception flags and
0 tests for errno executed.
2 errors occurred.
$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 23
model : 1
model name : AMD Ryzen 7 1800X Eight-Core Processor
stepping : 1
microcode : 0x6000626
cpu MHz : 3600.092
cache size : 512 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 syscall nx mmxext fxsr_opt rdtscp
lm rep_good nopl cpuid extd_apicid pni pclmulqdq monitor ssse3 cx16
sse4_1 sse4_2 x2apic movbe popcnt aes xsave avx rdrand hypervisor
lahf_lm cr8_legacy abm sse4a misalignsse 3dnowprefetch cpb vmmcall
fsgsbase avx2 rdseed clflushopt arat
bugs : fxsave_leak sysret_ss_attrs null_seg spectre_v1 spectre_v2
bogomips : 7200.18
TLB size : 2560 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management:
--
Paul Pluzhnikov