From 402e421c3da7db1a7696e3f1172de2741c50f250 Mon Sep 17 00:00:00 2001 From: lkcl Date: Mon, 7 Dec 2020 01:19:44 +0000 Subject: [PATCH] --- 3d_gpu/architecture/dynamic_simd/mul.mdwn | 2 ++ 1 file changed, 2 insertions(+) diff --git a/3d_gpu/architecture/dynamic_simd/mul.mdwn b/3d_gpu/architecture/dynamic_simd/mul.mdwn index fa32ee3a8..646c9cd4c 100644 --- a/3d_gpu/architecture/dynamic_simd/mul.mdwn +++ b/3d_gpu/architecture/dynamic_simd/mul.mdwn @@ -1,5 +1,7 @@ # Dynamic Partitioned Multiply +* + This is complicated! It is necessary to compute a full NxN matrix of partial multiplication results, then perform a cascade of adds (long multipication, in binary), using PartitionedAdd, which will "automatically" break the results down into segments, at all times, keeping each partitioned result separate. The [Wallace Tree](https://en.wikipedia.org/wiki/Wallace_tree) algorithm is presently deployed, here: we need to use the (more efficient) [Dadda algorithm](https://en.wikipedia.org/wiki/Dadda_multiplier) -- 2.30.2