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| author | David Shah <dave@ds0.me> | 2019-11-26 10:16:27 +0000 |
|---|---|---|
| committer | David Shah <dave@ds0.me> | 2019-11-26 10:16:27 +0000 |
| commit | 523ed4cfb2e37d23d40a56d77c082e3ea42f9082 (patch) | |
| tree | 24caf8b43f2370b4d752f44b83ebcf7401e18d0b /common | |
| parent | defafcf5fee8a6dac4a4d147751823aae7c2288b (diff) | |
| download | nextpnr-523ed4cfb2e37d23d40a56d77c082e3ea42f9082.tar.gz nextpnr-523ed4cfb2e37d23d40a56d77c082e3ea42f9082.tar.bz2 nextpnr-523ed4cfb2e37d23d40a56d77c082e3ea42f9082.zip | |
HeAP: improve error handling when stuck
Signed-off-by: David Shah <dave@ds0.me>
Diffstat (limited to 'common')
| -rw-r--r-- | common/placer_heap.cc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/common/placer_heap.cc b/common/placer_heap.cc index bbca2014..4a380a04 100644 --- a/common/placer_heap.cc +++ b/common/placer_heap.cc @@ -774,6 +774,7 @@ class HeAPPlacer } int ripup_radius = 2; int total_iters = 0; + int total_iters_noreset = 0; while (!remaining.empty()) { auto top = remaining.top(); remaining.pop(); @@ -793,13 +794,23 @@ class HeAPPlacer int best_inp_len = std::numeric_limits<int>::max(); total_iters++; + total_iters_noreset++; if (total_iters > int(solve_cells.size())) { total_iters = 0; ripup_radius = std::max(std::max(max_x, max_y), ripup_radius * 2); } + if (total_iters_noreset > std::max(50000, 1000 * int(ctx->cells.size()))) { + log_error("Unable to find legal placement for all cells, design is probably at utilisation limit.\n"); + } + while (!placed) { + // Set a conservative timeout + if (iter > std::max(1000, 3 * int(ctx->cells.size()))) + log_error("Unable to find legal placement for cell '%s', check constraints and utilisation.\n", + ctx->nameOf(ci)); + int rx = radius, ry = radius; if (ci->region != nullptr) { |