[gomp4] GOMP_target fall back execution

Richard Biener richard.guenther@gmail.com
Wed Sep 18 10:31:00 GMT 2013


On Wed, Sep 18, 2013 at 10:38 AM, Jakub Jelinek <jakub@redhat.com> wrote:
> On Wed, Sep 18, 2013 at 11:54:35AM +0400, Kirill Yukhin wrote:
>> Hello,
>> It seems that currently GOMP_target perform call to host variant of the routine:
>>
>> void
>> GOMP_target (int device, void (*fn) (void *), const char *fnname,
>>              size_t mapnum, void **hostaddrs, size_t *sizes,
>>              unsigned char *kinds)
>> {
>>   device = resolve_device (device);
>>   if (device == -1)
>>     {
>>       /* Host fallback.  */
>>       fn (hostaddrs);
>>       return;
>>     }
>> ...
>> }
>
> The problem with that is that what GOMP_target does right now for host
> fallback is not sufficient, but unfortunately I haven't been able to get
> answers to all my questions about what exactly must be done yet.

Also the host fallback could still use threads? ...

Richard.



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