add flint mparam for meteorlake

flintlib · Feb 4, 2025 · 5bf7db9 · 5bf7db9
1 parent 4868ef2
commit 5bf7db9
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Showing 4 changed files with 39 additions and 3 deletions.
diff --git a/configure.ac b/configure.ac
@@ -737,7 +737,7 @@ Please report at <https://github.com/flintlib/flint/issues/>])
         ;;
       meteorlake)
         gcc_cflags_arch="-march=meteorlake"
-        param_path="x86_64/skylake"
+        param_path="x86_64/meteorlake"
         ;;
       knightslanding)
         gcc_cflags_arch="-march=knl"

diff --git a/src/mpn_extras/x86_64/broadwell/flint-mparam.h b/src/mpn_extras/x86_64/broadwell/flint-mparam.h
@@ -31,7 +31,6 @@
 #define FFT_N_NUM 23
 #define FFT_MULMOD_2EXPP1_CUTOFF 128
 
-/* TODO: check this tuning */
 #define FLINT_PREINVERT_LIMB_USE_NATIVE 0
 
 #define FLINT_MULMOD_SHOUP_THRESHOLD 14

diff --git a/src/mpn_extras/x86_64/meteorlake/flint-mparam.h b/src/mpn_extras/x86_64/meteorlake/flint-mparam.h
@@ -0,0 +1,38 @@
+/*
+    Copyright (C) 2025 Vincent Neiger
+
+    This file is part of FLINT.
+
+    FLINT is free software: you can redistribute it and/or modify it under
+    the terms of the GNU Lesser General Public License (LGPL) as published
+    by the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.  See <https://www.gnu.org/licenses/>.
+*/
+
+/* parameters found for Intel(R) Core(TM) Ultra 7 165H */
+
+#ifndef FLINT_MPARAM_H
+#define FLINT_MPARAM_H
+
+/* TODO these were taken directly from skylake flint-mparam.h  ----> */
+#define FLINT_FFT_SMALL_MUL_THRESHOLD           1540
+#define FLINT_FFT_SMALL_SQR_THRESHOLD           3080
+
+#define FLINT_FFT_MUL_THRESHOLD                32000
+#define FLINT_FFT_SQR_THRESHOLD                32000
+/* <---- these were taken directly from skylake flint-mparam.h  */
+
+#define FFT_TAB \
+   { { 4, 4 }, { 4, 3 }, { 3, 2 }, { 2, 2 }, { 2, 1 } }
+
+#define MULMOD_TAB \
+   { 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1 }
+
+#define FFT_N_NUM 19
+#define FFT_MULMOD_2EXPP1_CUTOFF 128
+
+#define FLINT_PREINVERT_LIMB_USE_NATIVE 1
+
+#define FLINT_MULMOD_SHOUP_THRESHOLD 0
+
+#endif
diff --git a/src/mpn_extras/x86_64/skylake/flint-mparam.h b/src/mpn_extras/x86_64/skylake/flint-mparam.h
@@ -27,7 +27,6 @@
 #define FFT_N_NUM                                 19
 #define FFT_MULMOD_2EXPP1_CUTOFF                 128
 
-/* TODO: check this tuning */
 #define FLINT_PREINVERT_LIMB_USE_NATIVE 0
 
 /* verified on Xeon(R) Gold 6244 (cascade lake) */