In this case BOINC will not report availability of OpenCL device and OpenCL app will not be distributed to host. No special treatment required in this case. But yes, it's another case where CAL available and OpenCL not. Hope David's approach will work.
Среда, 30 января 2013, 7:46 -05:00 от Michael Tughan <[email protected]>: >One other problem I see with that is if the user is using old drivers that >support CAL but not OpenCL. A somewhat more unlikely scenario, especially with >the kind of people that would be inclined to run BOINC, but still a distinct >possibility. > >Michael Tughan > >On 2013-01-30, at 4:14 AM, Raistmer the Sorcerer < [email protected] > wrote: > >> Charlie, you forgot about AMD GPUs that support CAL but can't support >> OpenCL. Namely, HD2xxx, HD3xxx and their onboard analogues. >> Situation with ATi differs from sitaution with NV where all CUDA enabled >> GPUs are also OpenCL enabled ones. Old AMD/ATi GPUs support CAL but don't >> support OpenCL. >> >> >> >> Вторник, 29 января 2013, 22:28 -08:00 от Charlie Fenton < >> [email protected] >: >>> I may be mistaken, but my understanding is that the ATI/AMD drivers which >>> enable CAL on Windows and Linux also enable OpenCL for the ATI/AMD GPU. If >>> that is the case, and if the OpenCL application is faster, then it seems >>> that there should be no reason to have the CAL application at all. >>> >>> Of course, CAL does not support Macs, but Apple's OpenCL implementation >>> supports most modern ATI/AMD GPUs and is standard on current versions of OS >>> X. So it also makes sense to have OpenCL but not CAL applications for Macs. >>> >>> Cheers, >>> --Charlie >>> >>> -- >>> Charlie Fenton [email protected] >>> BOINC / SETI@home Macintosh & Windows Programmer >>> Space Sciences Laboratory >>> UC Berkeley >>> >>> >>> >>> On Jan 29, 2013, at 4:27 PM, David Anderson wrote: >>> >>>> The project should adjust its app_plan() function so that >>>> the estimated FLOPS for the OpenCL version >>>> is higher than that for the CAL version. >>>> -- David >>>> >>>> On 29-Jan-2013 4:01 PM, Raistmer the Sorcerer wrote: >>>>> SETI@home has both OpenCL ATi and Brook+ (CAL) apps for one of its >>>>> subprojects. Currently CAL app distributed to all CAL-capable ATi >>>>> devices, >>>>> including OpenCL capable ones. As was shown with CUDA apps on SETI beta >>>>> BOINC >>>>> can't select fastest app if few available. CAL app much slower than OpenCL >>>>> app. So, feature needed to allow server to send CAL app only to CAL-only >>>>> capable hosts (not send if host supports OpenCL too) and OpenCL app for >>>>> OpenCL+CAL/OpenCL hosts. AFAIK currently it''s not possible. >>> >>> _______________________________________________ >>> boinc_dev mailing list >>> [email protected] >>> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev >>> To unsubscribe, visit the above URL and >>> (near bottom of page) enter your email address. >> >> _______________________________________________ >> boinc_dev mailing list >> [email protected] >> http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev >> To unsubscribe, visit the above URL and >> (near bottom of page) enter your email address. > _______________________________________________ boinc_dev mailing list [email protected] http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev To unsubscribe, visit the above URL and (near bottom of page) enter your email address.
