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From: "tschwinge at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/102544] New: GCN offloading not working for 'amdgcn-amd-amdhsa--gfx906:sramecc+:xnack-' Date: Thu, 30 Sep 2021 10:17:58 +0000 [thread overview] Message-ID: <bug-102544-4@http.gcc.gnu.org/bugzilla/> (raw) https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102544 Bug ID: 102544 Summary: GCN offloading not working for 'amdgcn-amd-amdhsa--gfx906:sramecc+:xnack-' Product: gcc Version: 11.0 Status: UNCONFIRMED Keywords: openacc, openmp Severity: normal Priority: P3 Component: target Assignee: unassigned at gcc dot gnu.org Reporter: tschwinge at gcc dot gnu.org CC: ams at gcc dot gnu.org, caplanr at predsci dot com, jules at gcc dot gnu.org Target Milestone: --- Target: GCN Ron Caplan (in CC) is always eager to try his computational codes with GCC (in addition to other/proprietary/vendor-provided compilers), and I very much appreciate him providing feedback of any kind, which I find is always constructive. He's recently reported that "using Ubuntu 20.04 with the latest rocm and a Radeon VII", they got GCN offloading "to compile but when we run it we get: 'libgomp: target function wasn't mapped'". He sent me 'rocm-smi' and 'rocminfo' output, and comparing his vs. that of our amd_ryzen3 system, I find the following differences: -/+ Agent [...] ******* Name: gfx906 -/+ Uuid: [...] - Marketing Name: Vega 20 + Marketing Name: Vega 20 [Radeon VII] Vendor Name: AMD [...] - Node: 1 + Node: 2 Device Type: GPU Cache Info: L1: 16(0x10) KB + L2: 8192(0x2000) KB Chip ID: 26287(0x66af) Cacheline Size: 64(0x40) -/+ Max Clock Freq. (MHz): [...] - BDFID: 2816 + BDFID: 33536 - Internal Node ID: 1 + Internal Node ID: 2 Compute Unit: 60 SIMDs per CU: 4 Shader Engines: 4 @@ -128,7 +188,7 @@ Agent 2 Accessible by all: FALSE ISA Info: ISA 1 - Name: amdgcn-amd-amdhsa--gfx906:sramecc-:xnack- + Name: amdgcn-amd-amdhsa--gfx906:sramecc+:xnack- The very last item, I suppose, is the crucial one: 'sramecc-' vs. 'sramecc+' -- Andrew? (a) How do we improve upon the run-time 'libgomp: target function wasn't mapped' error reporting mode? (b) What needs to be done to make this work?
next reply other threads:[~2021-09-30 10:17 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-30 10:17 tschwinge at gcc dot gnu.org [this message] 2021-09-30 12:38 ` [Bug target/102544] " ams at gcc dot gnu.org 2021-10-01 5:44 ` miko at predsci dot com 2021-10-01 10:54 ` ams at gcc dot gnu.org 2021-10-01 17:07 ` miko at predsci dot com 2021-10-01 17:21 ` ams at gcc dot gnu.org 2021-10-01 18:44 ` miko at predsci dot com 2021-10-01 18:48 ` caplanr at predsci dot com 2021-10-04 12:07 ` ams at gcc dot gnu.org 2021-10-04 16:52 ` miko at predsci dot com
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