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Timeout when legal placement can't be found for cell

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This commit is contained in:
Arjen Roodselaar 2022-12-17 15:50:14 -08:00
parent 78926b31db
commit 6e0311efca
1 changed files with 6 additions and 3 deletions
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9
common/place/placer_heap.cc
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@ -862,6 +862,7 @@ class HeAPPlacer
int radius = 0; int radius = 0;
int iter = 0; int iter = 0;
int iter_at_radius = 0; int iter_at_radius = 0;
int total_iters_for_cell = 0;
bool placed = false; bool placed = false;
BelId bestBel; BelId bestBel;
int best_inp_len = std::numeric_limits<int>::max(); int best_inp_len = std::numeric_limits<int>::max();
@ -880,9 +881,9 @@ class HeAPPlacer
while (!placed) { while (!placed) {
// Set a conservative timeout // Set a conservative timeout
if (iter > std::max(10000, 3 * int(ctx->cells.size()))) if (total_iters_for_cell > std::max(10000, 3 * int(ctx->cells.size())))
log_error("Unable to find legal placement for cell '%s', check constraints and utilisation.\n", log_error("Unable to find legal placement for cell '%s' after %d attempts, check constraints and utilisation.\n",
ctx->nameOf(ci)); ctx->nameOf(ci), total_iters_for_cell);
// Determine a search radius around the solver location (which increases over time) that is clamped to // Determine a search radius around the solver location (which increases over time) that is clamped to
// the region constraint for the cell (if applicable) // the region constraint for the cell (if applicable)
@ -1084,6 +1085,8 @@ class HeAPPlacer
break; break;
} }
} }
total_iters_for_cell++;
} }
} }
auto endt = std::chrono::high_resolution_clock::now(); auto endt = std::chrono::high_resolution_clock::now();