Oxford/Princeton AVX benchmarks

[davieddy]

Originally Posted by Dubslow

Yes; they're too darned fast. With more bandwidth, there would be enough room for all four/whatever cores to talk to mem as necessary, so there wouldn't be any contention.

Don't really want to get too deep into this
(a few years ago I would have done)
But one of the "speed" tricks in my day was doing as much
as possible in "registers" and accessing memory as infrequently as possible.
Memory access has since got faster, so possibly is used too much these days?

D

[Dubslow]

Originally Posted by davieddy

Don't really want to get too deep into this
(a few years ago I would have done)
But one of the "speed" tricks in my day was doing as much
as possible in "registers" and accessing memory as infrequently as possible.
Memory access has since got faster, so possibly is used too much these days?

D

Ask George. I'm pretty sure his assembly already uses the on die cache (and registers) as much as possible. I've certainly seen him describe it as "cache-friendly".

[davieddy]

Originally Posted by Dubslow

Ask George. I'm pretty sure his assembly already uses the on die cache (and registers) as much as possible. I've certainly seen him describe it as "cache-friendly".

George is 7 years younger than me.
As I intimated, a few years ago I would love to have talked to him about shit hot programming.

D

[davieddy]

To whom whoever "corrected" Oxbridge to Oxford, would he/she kindly replace the original.
Any humour in the title would otherwise be lost.
You may as well replace "Ivy League" with Princeton.

Snob

[Dubslow]

Originally Posted by davieddy

To whom whoever "corrected" Oxbridge to Oxford, would he/she kindly replace the original.
Any humour in the title would otherwise be lost.
You may as well replace "Ivy League" with Princeton.

Snob

Mike perhaps? (Did he also perchance remove an "f" from replace the title of a recent thread in S&T forum?)

[davieddy]

Originally Posted by Dubslow

Mike perhaps? (Did he also perchance remove an "f" from replace the title of a recent thread in S&T forum?)

"f"? Don't beat about the bush.

Anyway I'm really Dark Blue through and through.
(You may need to consult Paul or Tom on that one)

D

[Dubslow]

Originally Posted by davieddy

"f"? Don't beat about the bush.

Anyway I'm really Dark Blue through and through.
(You may need to consult Paul or Tom on that one)

D

No really, I could have sworn it was spelled correctly when originally posted, but later it was misspelled.

[davieddy]

Originally Posted by Dubslow

No really, I could have sworn it was spelled correctly when originally posted, but later it was misspelled.

This is getting spooky.
Bedtime!

xxx

I put a spell on you

[nucleon]

Ok, I have access to a 3.1GHz Ivy Bridge.

AVX enabled, P-1 tests. Getting 25GHz-days/day on 4 cores, 21.5GHz on 3 cores. Slight memory starvation @1600MHz ram when 4 cores run stage2 at same time.

Setting highmemworkers=3, but very hard to get benchmarks (as work is paused/restarted etc..). Rough estimate 26GHz/days per day.

-- Craig

[davieddy]

Originally Posted by nucleon

Ok, I have access to a 3.1GHz Ivy Bridge.
-- Craig

Key to the Highway?

D