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tensor: Handle wid queue backpressure in dpu

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This commit is contained in:
Hansung Kim
2024-05-30 15:25:00 -07:00
parent 2e2decc8b6
commit 2743d32bd2
2 changed files with 4 additions and 6 deletions
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6
hw/rtl/fpu/VX_tensor_dpu.sv
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@@ -93,7 +93,7 @@ module VX_tensor_dpu #(
wire enq = valid_in && ready_in;
wire deq = valid_out && ready_out;
assign ready_in = &(threadgroup_readys);
assign ready_in = &(threadgroup_readys) && !full;
assign valid_out = &(threadgroup_valids);
// need to pass along warp id's to do multithreading
@@ -109,13 +109,11 @@ module VX_tensor_dpu #(
.data_out (D_wid),
.empty (empty),
`UNUSED_PIN(alm_empty),
.full (full), // should be impossible to overflow
.full (full),
`UNUSED_PIN(alm_full),
`UNUSED_PIN(size)
);
`RUNTIME_ASSERT(reset || !full, ("dpu wid queue is full!"))
// `RUNTIME_ASSERT(reset || (&(threadgroup_valids) == valid_out),
// ("FEDP and metadata queue went out of sync!"))
endmodule