u/gxsr4life

STREAM memory bandwidth results on an c9g.48xlarge instance.

For reference my own HPC code (memory bandwidth limited with most time spent doing parallel sparse linear algebra) ran about 40% faster compared to the last generation Graviton (G4) :)

$ ./STREAM/stream_c.exe
-------------------------------------------------------------
STREAM version $Revision: 5.10 $
-------------------------------------------------------------
This system uses 8 bytes per array element.
-------------------------------------------------------------
Array size = 100000000 (elements), Offset = 0 (elements)
Memory per array = 762.9 MiB (= 0.7 GiB).
Total memory required = 2288.8 MiB (= 2.2 GiB).
Each kernel will be executed 10 times.
 The *best* time for each kernel (excluding the first iteration)
 will be used to compute the reported bandwidth.
-------------------------------------------------------------
Number of Threads requested = 192
Number of Threads counted = 192
-------------------------------------------------------------
Your clock granularity/precision appears to be 1 microseconds.
Each test below will take on the order of 2414 microseconds.
   (= 2414 clock ticks)
Increase the size of the arrays if this shows that
you are not getting at least 20 clock ticks per test.
-------------------------------------------------------------
WARNING -- The above is only a rough guideline.
For best results, please be sure you know the
precision of your system timer.
-------------------------------------------------------------
Function    Best Rate MB/s  Avg time     Min time     Max time
Copy:          865362.5     0.001900     0.001849     0.001957
Scale:         783524.4     0.002116     0.002042     0.002182
Add:           726863.3     0.003357     0.003302     0.003411
Triad:         689663.6     0.003587     0.003480     0.003740
-------------------------------------------------------------
Solution Validates: avg error less than 1.000000e-13 on all three arrays
-------------------------------------------------------------
$ for i in `seq 1 10`; do ./STREAM/stream_c.exe | grep Triad; done
Triad:         689049.9     0.003545     0.003483     0.003641
Triad:         691226.4     0.003630     0.003472     0.003998
Triad:         684924.1     0.003587     0.003504     0.003926
Triad:         687121.5     0.003550     0.003493     0.003590
Triad:         671894.9     0.003619     0.003572     0.003709
Triad:         685904.2     0.003603     0.003499     0.003880
Triad:         546222.2     0.004446     0.004394     0.004508
Triad:         625509.8     0.003903     0.003837     0.003983
Triad:         618552.9     0.003929     0.003880     0.004012
Triad:         682000.7     0.003565     0.003519     0.003617

Folks, has the potential Iran-US peace deal already been priced in by the market, or are we about to witness a broader post-announcement bull run?

Thinking about pulling the trigger on a used, low mileage Wrangler 4xe with plenty of drivetrain and battery warranty left. We already have two Teslas, one for my wife’s commute and the other mostly on standby or for errands since I usually ride motorcycles, so this would not be a daily driver but more of a weekend/fun machine.

We have always wanted a Wrangler, but the price was hard to justify. Now picking up what was essentially a 60k plus vehicle for less than half feels like getting away with something. That kind of depreciation is hard to ignore.

It has already been through the recall work, and I am not too concerned if it needs the occasional trip to the shop. Overall, it feels like one of those rare situations where what you want and what makes financial sense line up just a little too well to pass up.

What do you guys think?