I'm testing an Uber lib, for geo indexing, that performs thousands of
geospatial calculations... during the tests, when compiling the project,
I received an illegal instruction error for absolute all the testes...,
after some investigations, I identified that the failure occurred in the
__atan2
C [libm.so.6+0x402e8] __atan2_finite+0xfff92ac0
Here they are, the related issues in the respective projects:
* https://github.com/uber/h3/issues/769
* https://github.com/uber/h3-java/issues/133
At now, I'm testing on QEMU with last Debian Port image:
Also, I did the same test on IBM Power5 - 9111-520 and on Power Mac G5,
the same error happens :/
|$ uname -a Linux debian 6.1.0-9-powerpc64 #1 SMP Debian 6.1.27-1
(2023-05-08) ppc64 GNU/Linux $ lscpu Architecture: ppc64 CPU op-mode(s):
32-bit, 64-bit Byte Order: Big Endian CPU(s): 12 On-line CPU(s) list:
0-11 Model name: POWER7 (architected), altivec supported Model: 2.1 (pvr
004a 0201) Thread(s) per core: 1 Core(s) per socket: 12 Socket(s): 1
Virtualization features: Hypervisor vendor: KVM Virtualization type:
para Caches (sum of all): L1d: 384 KiB (12 instances) L1i: 384 KiB (12
instances) NUMA: NUMA node(s): 1 NUMA node0 CPU(s): 0-11
Vulnerabilities: Itlb multihit: Not affected L1tf: Mitigation; RFI Flush
Mds: Not affected Meltdown: Mitigation; RFI Flush Mmio stale data: Not
affected Retbleed: Not affected Spec store bypass: Mitigation; Kernel
entry/exit barrier (fallback) Spectre v1: Mitigation; __user pointer
sanitization, ori31 speculat ion barrier enabled Spectre v2: Mitigation;
Software count cache flush (hardware accele rated), Software link stack
flush Srbds: Not affected Tsx async abort: Not affected |
