diff options
| author | Jin Wang <[email protected]> | 2014-11-14 18:45:46 -0500 |
|---|---|---|
| committer | Jin Wang <[email protected]> | 2016-07-06 02:17:15 -0400 |
| commit | 8ef2e4eb13093c59190439800fdd0cc552a3779e (patch) | |
| tree | da3ab84939d3faabd8384e8d79e10766453c3e24 /src/gpgpu-sim/shader.cc | |
| parent | 69bb1082de9df29d1d7b40486301049767e607b0 (diff) | |
ADD: add cdp latency
Diffstat (limited to 'src/gpgpu-sim/shader.cc')
| -rw-r--r-- | src/gpgpu-sim/shader.cc | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/gpgpu-sim/shader.cc b/src/gpgpu-sim/shader.cc index cd38cb7..e85c4a8 100644 --- a/src/gpgpu-sim/shader.cc +++ b/src/gpgpu-sim/shader.cc @@ -841,6 +841,13 @@ void scheduler_unit::cycle() unsigned max_issue = m_shader->m_config->gpgpu_max_insn_issue_per_warp; while( !warp(warp_id).waiting() && !warp(warp_id).ibuffer_empty() && (checked < max_issue) && (checked <= issued) && (issued < max_issue) ) { const warp_inst_t *pI = warp(warp_id).ibuffer_next_inst(); + //Jin: handle cdp latency; + if(pI->m_is_cdp && warp(warp_id).m_cdp_latency > 0) { + assert(warp(warp_id).m_cdp_dummy); + warp(warp_id).m_cdp_latency--; + break; + } + bool valid = warp(warp_id).ibuffer_next_valid(); bool warp_inst_issued = false; unsigned pc,rpc; @@ -875,6 +882,25 @@ void scheduler_unit::cycle() bool sp_pipe_avail = m_sp_out->has_free(); bool sfu_pipe_avail = m_sfu_out->has_free(); if( sp_pipe_avail && (pI->op != SFU_OP) ) { + + //Jin: special for CDP api + if(pI->m_is_cdp && !warp(warp_id).m_cdp_dummy) { + assert(warp(warp_id).m_cdp_latency == 0); + + extern unsigned cdp_latency[3]; + if(pI->m_is_cdp != 3) + warp(warp_id).m_cdp_latency = cdp_latency[pI->m_is_cdp - 1]; + else //cudaLaunchDeviceV2 + warp(warp_id).m_cdp_latency = cdp_latency[pI->m_is_cdp - 1] + + cdp_latency[pI->m_is_cdp] * active_mask.count(); + warp(warp_id).m_cdp_dummy = true; + break; + } + else if(pI->m_is_cdp && warp(warp_id).m_cdp_dummy) { + assert(warp(warp_id).m_cdp_latency == 0); + warp(warp_id).m_cdp_dummy = false; + } + // always prefer SP pipe for operations that can use both SP and SFU pipelines m_shader->issue_warp(*m_sp_out,pI,active_mask,warp_id); issued++; |