Date: | Mon, 7 Jun 2010 01:10:08 -0700 (PDT) |
---|---|
From: | Muhammad abid Mughal <mabidm_pieas@xxxxxxxxx> |
Subject: | Re: [Gems-users] prefetch question |
hi, when prefetch inst gets executed the following member funtcion from memop.C file called: void prefetch_inst_t::Execute( void ) { STAT_INC( m_pseq->m_stat_prefetches_exec[m_proc] ); // trap_type_t t = addressGenerate( OPAL_LOAD ); //this can only be true for Non i/o and non mmu prefetches // if (t != Trap_NoTrap) { /* couldn't correctly generate address -- we're done! */ SetStage( COMPLETE_STAGE ); return; // } /* can't complete I/O accesses, and moreover they are uncacheable */ //We dont need to set trap to Trap_Use_Functional bec prefetch inst dont affect program regs /* if ( m_physical_addr != (pa_t) -1 && isIOAccess( m_physical_addr ) ) { SetStage( COMPLETE_STAGE ); STAT_INC( m_pseq->m_stat_count_io_access[m_proc] ); return; } /////////////// no lsq or WB concept for prefetches if ( isCacheable() ) { ASSERT( m_physical_addr != (pa_t) -1 ); //set address to be valid m_addr_valid = true; if (!accessCache())//accessCache() always ret true return; } // is cacheable Complete(); */ } comment out as shown above. what i am doing is just setting stage to "COMPLETE_STAGE" and returning. Regards, Muhammad abid From: Jerry Lin <cosjerry@xxxxxxxxx> To: Gems Users <gems-users@xxxxxxxxxxx> Sent: Monday, June 7, 2010 15:15:08 Subject: [Gems-users] prefetch question Hello all,
When I running workloads with Ruby and Opal using default configuration, the prefetch count in the dump file won't be zero.
Is there any configuration to turn on/off the prefetcher?
Or is there any modification can be done to turn on/off the prefetcher?
Thanks for helping.
|
[← Prev in Thread] | Current Thread | [Next in Thread→] |
---|---|---|
|
Previous by Date: | [Gems-users] prefetch question, Jerry Lin |
---|---|
Next by Date: | [Gems-users] Run opal by specifying the number of cycles, mihai pricopi |
Previous by Thread: | [Gems-users] prefetch question, Jerry Lin |
Next by Thread: | Re: [Gems-users] prefetch question, Jerry Lin |
Indexes: | [Date] [Thread] |