Maximum Work Group Size

Discussion created by dschaa on Dec 29, 2011
Latest reply on Dec 30, 2011 by dschaa

Currently we're using the environment variable GPU_MAX_WORKGROUP_SIZE to get around the 256 work item limit per work group.  I understand that there are performance implications for requiring too many work items to be active on a compute unit at a time, however, is there any chance of execution failure or incorrect computation?  We'd like the work group size to be up to 768.