Lmst

#RVV

SiFive X280 RVV benchmarks: https://camel-cdr.github.io/rvv-bench-results/tt_x280/index.html

Civil was so nice to run my rvv benchmark on the SiFive X280 cores on the Tenstorrent Blackhole.

#riscv #rvv #Tenstorrent #sifive

Performance observations

These are just my first impressions of the core looking at the initial benchmark results.

the regular vector instructions take 2/4/8/16 cycles for LMUL=1/2/4/8
The core likes bigger LMUL and vsetvli has basically no overhead (unrolling can still be advantageous, because of the in-order scalar core)
vl based dispatch, so a LMUL=8 instruction is as fast as a LMUL=1 instruction if vl elements fit into a LMUL=1 register
1 cycle per element `vrgather.vv` and `vcompress.vm`, but you can still get decent speed up over scalar loads from memory. (see LUT4 and LUT6)
Very good fault-only-first load support. Page-size-aware strlen is only about 25% faster than the fault-only-first load version.
nf=2 segmented load/stores seems very fast. (see utf16)
nf>2 segmented- and strided load/stores perform decently until a big drop in performance between 8 and 24 KiB of processed data. (see utf32)

and for the #IEEE754 / #floatingpoint nerds (you know who you are!) here's a much more definitive answer/breakdown of our IEEE Binary FP32 conformance for the Vector Unit! https://github.com/tenstorrent/tt-isa-documentation/blob/main/WormholeB0/TensixTile/TensixCoprocessor/SFPMAD.md#ieee754-conformance--divergence

#RVV #SIMD #HPC

https://github.com/riscv-non-isa/rvv-intrinsic-doc/releases/tag/v1.0-ratified

Vorige week in de Ronde van Vlaanderen zat ik me te ergeren aan het taalgebruik van Michael Boogerd. Ja, ik zeg het duidelijk op z'n Nederlands.
Boogerd gebruikte in bijna elke zin het on-Nederlandse '#geraken'.
Maar nu keek ik op #Eurosport naar Parijs Roubaix, wordt ook 'geraken' gebruikt. Hou daar toch es mee op, zo geraak ik nog in een depressie. #RVV #parijsroubaix

:rodillo: 📺

haberá que facer a endurance un pouco vendo #RVV ♀️ Se tal xa nos vemos á noite :pikawave:

tv screenshot with lotte kopecki, elisa longo-borghini and Mariane The GOAT featured as main protagonists of 2025 ronde van vlaanderen cycling race

#CouchPeloton Congratulations to @ClintEssential , @MartinStoermer and rhondafg who have won the women's #RVV #TrollTips trifecta with 30 points

clintwits in 1st with 30 points.
martinstoermer in 1st with 30 points.
rhondafg in 1st with 30 points.
abagofspanners in 4th with 23 points.
cassana in 5th with 22 points.
markrprior in 5th with 22 points.
davefrompenrith in 7th with 20 points.
kaylesley in 8th with 0 points.

#CouchPeloton Tonight's women's #RVV #TrollTips winners are @cassana , @ClintEssential , davefrompenrith , @markrprior , @MartinStoermer , nicholosophy and rhondafg

cassana picked Lotte KOPECKY: 1st scored 20 (20+0)
clintwits picked Lotte KOPECKY: 1st scored 20 (20+0)
davefrompenrith picked Lotte KOPECKY: 1st scored 20 (20+0)
markrprior picked Lotte KOPECKY: 1st scored 20 (20+0)
martinstoermer picked Lotte KOPECKY: 1st scored 20 (20+0)
nicholosophy picked Lotte KOPECKY: 1st scored 20 (20+0)
rhondafg picked Lotte KOPECKY: 1st scored 20 (20+0)
chrispana9 picked Anna VAN DER BREGGEN: 11th scored 4 (0+4)
kaylesley picked Marianne VOS: 40th scored 0
abagofspanners picked Lorena WIEBES: scored 0
sophoife picked Lorena WIEBES: scored 0

Yeaaaay Lotte!! #rvv #tourofflanders

Bravo! #LotteKopecky 🥇 👏 👏 👏 #rvv

foto van Lotte Kopecky, in regenboogtrui, met de armen over elkaar

Lotte!!!!
#rvv #rvv25 #rvvdames

Komaan Kopecky! #deRonde #rvv

#CouchPeloton Congratulations to @abagofspanners , aidanfawkes , @markrprior and rhondafg who have won the men's #RVV #TrollTips trifecta with 43 points

abagofspanners in 1st with 43 points.
aidanfawkes in 1st with 43 points.
markrprior in 1st with 43 points.
rhondafg in 1st with 43 points.
andrewmedew in 5th with 36 points.
cassana in 5th with 36 points.
clintwits in 5th with 36 points.
martinstoermer in 8th with 33 points.
kaylesley in 9th with 30 points.
davefrompenrith in 10th with 29 points.
pukupuss in 11th with 26 points.

Bon, la tendance se confirme : ne suivez pas mes pronos 😭 #RVV

RE: https://bsky.app/profile/did:plc:2dezr4g5qsjtlpysoh4yu6dh/post/3lm54eccvss2l

#CouchPeloton tonight's women's #RVV #TrollTips trifecta predictions

CouchPeloton predictions for the top 3 of tonight's women's DeRonde

Kopecky weet toch altijd wanneer ze moet schuiven hé? 👌 #rvv #deRonde

#CouchPeloton Tonight's women's #RVV #TrollTips predictions

cassana picked Lotte KOPECKY (no bonus)
clintwits picked Lotte KOPECKY (no bonus)
davefrompenrith picked Lotte KOPECKY (no bonus)
markrprior picked Lotte KOPECKY (no bonus)
martinstoermer picked Lotte KOPECKY (no bonus)
nicholosophy picked Lotte KOPECKY (no bonus)
rhondafg picked Lotte KOPECKY (no bonus)
chrispana9 picked Elisa LONGO BORGHINI
kaylesley picked Marianne VOS
abagofspanners picked Lorena WIEBES
sophoife picked Lorena WIEBES

And now it is Pogacar who is the strongest at Ronde van Vlaanderen 2025
#RVV #RVV25 #RVVmen #cycling #sports

Dames op de Eikenberg
#rvv #rvv25 #rvvdames

🥇 👏 👏 👏 #RvV

foto van Tadej Pogačar, in wielertenu, de regenboogtrui, met zijn handen in zijn zij

finishfoto (still uit de video) van de Ronde van Vlaanderen, Pogacar fietst met zijn rechterarm in de lucht geheven in zijn eentje over de finish

🇧🇪 Flandriako Tourra 2025, gizonak

🥇Pogačar (UAD)
🥈Pedersen (LTK)
🥉Van der Poel (ADC)

#RVV25 #RVV #tropela

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