Wednesday, August 30th 2017
AMD Resolves Linux Marginality Performance Issue on Newly Shipped Ryzen CPUs
We've brought to your attention how AMD's Ryzen architecture was encountering a bug that prevented it from successfully performing certain tasks under Linux. The issue, to which Phoronix was the first website to call attention to, was later confirmed by AMD, with a further remark from the chip designer that EPYC and ThreadRipper weren't affected by it.
AMD has now solved the Ryzen issue at a silicon level, and new revisions of the CPUs should be clear of the problems. Phoronix's Michael Larabel has confirmed that the new processor passes the previous insurmountable, crash-prone workloads with flying colors, so all in all, AMD delivered a swift response to the issue. The company is also doing good for itself in that it is open to replacing previous-batch CPUs that are affected by the issue, through a contact to its Customer Care department.
Source:
Phoronix
AMD has now solved the Ryzen issue at a silicon level, and new revisions of the CPUs should be clear of the problems. Phoronix's Michael Larabel has confirmed that the new processor passes the previous insurmountable, crash-prone workloads with flying colors, so all in all, AMD delivered a swift response to the issue. The company is also doing good for itself in that it is open to replacing previous-batch CPUs that are affected by the issue, through a contact to its Customer Care department.
15 Comments on AMD Resolves Linux Marginality Performance Issue on Newly Shipped Ryzen CPUs
I've waited for 6 months to build a Linux server... how do I buy a segfault-free CPU initially? I'd rather avoid the several hours of testing needed to attain RMA and retest.
Edit: Not sure, but the only way should be for you to physically check CPU batches to see.
It's also worth noting that both Intel and AMD list errratus on their website for every processor.
for majority user who using Windows mostly for gaming/streaming/rendering/CAD etc
even they knew that their CPU has such issue, they dont bother to go through all the RMA hassle and move on.
I suppose one can consult with the vendor, they should know what they have in stock.
www.phoronix.com/scan.php?page=article&item=new-ryzen-fixed&num=1
Intel had to do that once, cost them nearly half a billion dollars! This is part of the reason why microcode on today's processors can be updated.
@Raevenlord:
Is this the same FMA3 bug that AMD fixed with microcode or is it a different one?
EDIT: Turns out it's a different bug that apparently can't be fixed in microcode. Yet according to that article's comment section the fixed CPUs still have the same stepping :confused:
New Ryzen revision corrects compiler segmentation fault issue
As I said in that thread, 1.2v SOC fixed it for me.
This sounds like a stepping revision