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Diffstat (limited to 'src/lmr_testing/search_c_snippets.txt')
| -rw-r--r-- | src/lmr_testing/search_c_snippets.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/lmr_testing/search_c_snippets.txt b/src/lmr_testing/search_c_snippets.txt new file mode 100644 index 0000000..72d4ae5 --- /dev/null +++ b/src/lmr_testing/search_c_snippets.txt @@ -0,0 +1,33 @@ +search.c changes to restore (both trivial one-liners): + +1. Near `iInitialAlpha = iAlpha;` (right after it), add: + + pi->fPvNode = (iBeta != iAlpha + 1); + +2. OPTIONAL -- only if resuming "isolate LMR's effect alone" testing + methodology (i.e. you want LMR-only numbers uncontaminated by + futility pruning again). If instead you want to test LMR *combined* + with futility (recommended next step per yesterday's session), skip + this and leave futility on as it is in the clean baseline. + + Find the futility-pruning block: + + ASSERT(!uFutilityMargin); + if ((iRoughEval + VALUE_ROOK <= iAlpha) && + (uDepth <= TWO_PLY) && + ... + + and disable it for isolation testing: + + ASSERT(!uFutilityMargin); + if (FALSE && // temporarily disabled to isolate graded-LMR's + // effect in isolation during testing + (iRoughEval + VALUE_ROOK <= iAlpha) && + (uDepth <= TWO_PLY) && + ... + +Everything else in search.c (the GetLMRReduction call site, the +re-search-add-back using `uNextDepth -= iExtend`) is already generic +and needs NO changes -- it was written to work with any reduction +magnitude GetLMRReduction returns, so it already works correctly with +both the baseline's fixed -ONE_PLY and the graded version. |