Another new version of primesieve...

[BryanQuigley]

Not sure this one will be any better that the last update, but thought I'd mention it...

https://github.com/kimwalisch/primesieve/releases
https://github.com/kimwalisch/primesieve/blob/master/ChangeLog

[BryanQuigley]

Another new version, highlight:
primesieve-7.3 improves the cache efficiency of the sieving algorithm
for large sieving primes. By using aligned memory it is possible
to reduce the number of pointer indirections which reduces cache
pollution. I have measured a speed up of 15% near 1e18 and a speed up
of 25% near 1e19.

[SChernykh]

Thanks for the information! I'll see if I can back-port some of these optimizations. The differences are too large to integrate the full version now.

[BryanQuigley]

It's supposed to be API compatible.. (although I did just note that the opencl version might be still on an old version of it?) - I also am unsure if you made your own modifications to it..

Relatedly, I'm trying to build Amicable boinc version (boinc-128-bit).. had to change #include <boinc_api.h> to boinc/boinc_api.h. Even with that I get: /usr/local/include/boinc/parse.h:26:10: fatal error: config.h: No such file or directory
#include "config.h"
Any hints welcome.

If you're planning on ending the project at the end of the 10^20 run, these optimizations might not be that important..

[BryanQuigley]

Figured it out:

1. Have boinc checkout and Amicable checkout next to each other - say in ~/git/Amicable and ~/git/boinc
2. In boinc, git checkout 7c8386b1009735a7bb4d1945bce890553b62a515 which is before the config.h change (6e5b7da699c)
3. Build boinc with ./configure -C--enable-pkg-devel
4. Make amicable

Also there is another new version of primesieve. I plan to focus first on if we can fix it to work with newer boinc checkouts.. (or maybe that needs a boinc change...?)

[BryanQuigley]

Looks like all it needs is adding -I ../boinc/ to Includes:
diff --git a/makefile b/makefile
index 6d7e735..8c7558f 100644
--- a/makefile
+++ b/makefile
@@ -1,5 +1,5 @@
WARNINGS=-Wall -Wextra -Wpedantic -Wstrict-overflow=5 -Wshadow -Warray-bounds=2
-INCLUDES=-I primesieve/include -I Amicable -I ../boinc/api -I ../boinc/lib
+INCLUDES=-I primesieve/include -I Amicable -I ../boinc/api -I ../boinc/lib -I ../boinc/
LIBS=-L ../boinc/api -L ../boinc/lib -Wl,--whole-archive -lboinc_api -lboinc -lpthread -Wl,--no-whole-archive

Happy to make a PR if you'd prefer

[jensdenbraber]

When upgrading, maybe consider the newest version. At the moment there is a new version released: version 12.3, https://github.com/kimwalisch/primesieve/releases/tag/v12.3

[SChernykh]

Primesieve is currently < 0.1% of the runtime, so it's not urgent and probably won't be.