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Re: [PATCH] Remove PTX link option

From: James Norris <jnorris at codesourcery dot com>
To: Jakub Jelinek <jakub at redhat dot com>
Cc: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Fri, 8 Jan 2016 11:49:20 -0600
Subject: Re: [PATCH] Remove PTX link option
Authentication-results: sourceware.org; auth=none
References: <568FD49E dot 1030903 at codesourcery dot com> <20160108153005 dot GW18720 at tucnak dot redhat dot com> <568FD81F dot 7070204 at codesourcery dot com> <20160108154428 dot GX18720 at tucnak dot redhat dot com> <568FE1FC dot 3060703 at codesourcery dot com> <20160108163212 dot GY18720 at tucnak dot redhat dot com>

On 01/08/2016 10:32 AM, Jakub Jelinek wrote:

On Fri, Jan 08, 2016 at 10:21:16AM -0600, James Norris wrote:

And CU_JIT_TARGET / CU_TARGET_COMPUTE_30 requests JITting only on sm_30 and
nothing else, or just on sm_30 or later, something else?
This really should be reviewed by somebody familiar with CUDA more than
myself.

The former. If one were to execute a program that specified
CU_TARGET_COMPUTE_30 on a Maxwell-class GPU (sm_50), you would
see the runtime error:

libgomp: cuModuleLoadData error: device kernel image is invalid

So, why this didn't get fixed 1.5 years ago?  Are you testing just on sm_30
and not on sm_50?

	Jakub


As the Maxwell GPU's (sm_50) are relatively new, we've only
recently started testing with them.

Jim

Follow-Ups:
- Re: [PATCH] Remove PTX link option
  - From: Alexander Monakov

References:
- [PATCH] Remove PTX link option
  - From: James Norris
- Re: [PATCH] Remove PTX link option
  - From: Jakub Jelinek
- Re: [PATCH] Remove PTX link option
  - From: James Norris
- Re: [PATCH] Remove PTX link option
  - From: Jakub Jelinek
- Re: [PATCH] Remove PTX link option
  - From: James Norris
- Re: [PATCH] Remove PTX link option
  - From: Jakub Jelinek

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