From d0454b26d2180697131571f9cd61b26d53e2be98 Mon Sep 17 00:00:00 2001
From: "Peter W. Draper" <p.w.draper@durham.ac.uk>
Date: Mon, 24 Apr 2023 11:21:27 +0100
Subject: [PATCH] Add note about progress on the topic this project was
 initially designed to look at

---
 README.md | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/README.md b/README.md
index 2601f6e..712d27e 100644
--- a/README.md
+++ b/README.md
@@ -64,3 +64,14 @@ eager exchanges are working and what effect the size of the packets has.
 
 ---------------------------
 Peter W. Draper 24 Sep 2019.
+
+Continuing from the notes above, there are also RDMA based versions of
+swiftmpistepsim, which are found in the various branches of the
+repository. That work and a re-working of SWIFT to use RDMA revealed that the
+main driver for the delays wasn't the scatter in MPI completion, but the time
+taken to copy data into and out of registered memory, the best solution to
+which was to make better use of the memory bandwidth by copying using multiple
+threads.
+
+-----------------------------
+Peter W. Draper 24 April 2023.
-- 
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