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Improving placement timing heuristic

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-06-20 17:54:07 +02:00
parent 4fc9625040
commit c515e5da2d
1 changed files with 4 additions and 1 deletions
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5
common/place_sa.cc
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@ -315,7 +315,10 @@ class SAPlacer
// wirelength += std::abs(load_x - driver_x) + std::abs(load_y - // wirelength += std::abs(load_x - driver_x) + std::abs(load_y -
// driver_y); // driver_y);
delay_t raw_wl = ctx->estimateDelay(drv_wire, user_wire); delay_t raw_wl = ctx->estimateDelay(drv_wire, user_wire);
wirelength += 100 * (ctx->getDelayNS(raw_wl) / ctx->getDelayNS(load.budget)); wirelength += pow(1.3, (ctx->getDelayNS(raw_wl) -
ctx->getDelayNS(load.budget)) /
10) +
ctx->getDelayNS(raw_wl);
// wirelength += pow(ctx->estimateDelay(drv_wire, user_wire), 2.0); // wirelength += pow(ctx->estimateDelay(drv_wire, user_wire), 2.0);
} }
return wirelength; return wirelength;