Re: [boost] [compute] Review

Subject: Re: [boost] [compute] Review
From: Gruenke,Matt (mgruenke_at_[hidden])
Date: 2014-12-30 21:46:26

-----Original Message-----
From: Boost [mailto:boost-bounces_at_[hidden]] On Behalf Of John Bytheway
Sent: Tuesday, December 30, 2014 21:23
To: boost_at_[hidden]
Subject: Re: [boost] [compute] Review

> On 2014-12-29 02:01, Kyle Lutz wrote:

>> Currently it will just buffer the entire range into a std::vector<T>
>> and then copy that to the device. If this is a bottleneck it could
>> also be improved to copy the data in smaller batches. Let me know if
>> you encounter issues with this.
>
> Does this also work with copy_async?  I presume not, because there
> would be troubles with the lifetime of the temporary vector...

Async host <-> device copies only exist at the low level (command_queue).  They sidestep the issue by using raw pointers and size.

For a summary of synchronization-related exception safety issues, see my last message on Synchronization.

Matt

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