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Customize global barrier response logic for clusters

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This commit is contained in:
Hansung Kim
2024-03-18 14:30:32 -07:00
parent 2525df9c5f
commit df4b21507e
1 changed files with 12 additions and 0 deletions
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12
hw/rtl/core/VX_schedule.sv
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@@ -162,10 +162,22 @@ module VX_schedule import VX_gpu_pkg::*; #(
stalled_warps_n[warp_ctl_if.wid] = 0; // unlock warp
end
`ifdef GBAR_ENABLE
`ifdef GBAR_CLUSTER_ENABLE
// don't check req_id == rsp_id, otherwise it limits us to
// 1 outstanding request. instead assume that any response coming
// back contains a valid id
if (gbar_bus_if.rsp_valid) begin
barrier_masks_n[gbar_bus_if.rsp_id] = '0;
// instead of unlocking all warps, only unlock those that requests
// for this barrier
barrier_stalls_n &= ~barrier_masks[gbar_bus_if.rsp_id];
end
`else
if (gbar_bus_if.rsp_valid && (gbar_req_id == gbar_bus_if.rsp_id)) begin
barrier_masks_n[gbar_bus_if.rsp_id] = '0;
barrier_stalls_n = '0; // unlock all warps
end
`endif
`endif
// Branch handling