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How Meltdown and Spectre Were Independently Discovered By Four Research Teams At Once | WIRED
The uncanny coincidences among the Meltdown and Spectre discoveries raise questions about "bug collisions"—and the safety of the NSA's hidden vulnerability collection.
cpu  security  meltdown  spectre  hardware  bug  intel 
1 hour ago by orlin
GitHub - Microsoft/perfview
PerfView is a CPU and memory performance-analysis tool
memory  cpu  performance  windows  microsoft  tool  github 
23 hours ago by geekzter
a free and open processor for embedded systems.
hardware  cpu  architecture 
yesterday by Z303
is an open technical community based on the POWER architecture
hardware  power  cpu  architecture 
yesterday by Z303
Red Hat Will Revert Spectre Patches After Receiving Reports of Boot Issues
Red Hat is releasing updates that are reverting previous patches for the Spectre vulnerability (Variant 2, aka CVE-2017-5715) after customers complained that some systems were failing to boot.
"Red Hat is no longer providing microcode to address Spectre, variant 2, due to instabilities introduced that are causing customer systems to not boot," the company said yesterday.
"The latest microcode_ctl and linux-firmware packages are reverting these unstable microprocessor firmware changes to versions that were known to be stable and well tested, released prior to the Spectre/Meltdown embargo lift date on Jan 3rd," Red Had added.
browser  bug  cpu  javascript  linux  mac  meltdown_spectre  privacy  security  windows 
yesterday by rgl7194
CPU DB: Recording Microprocessor History - ACM Queue
With this open database, you can mine microprocessor trends over the past 40 years.
hardware  cpu 
yesterday by nmcbean
Celtoys/Remotery: Single C file, Realtime CPU/GPU Profiler with Remote Web Viewer
Remotery - Single C file, Realtime CPU/GPU Profiler with Remote Web Viewer
project  profiler  cpu  gpu  c 
2 days ago by adragomir
Bad Month for the Main Thread
But darn it all, I just want to build modular websites using HTML and a little bit of JavaScript.
browser  cpu  performance  javascript 
2 days ago by Gwendoux
The impromptu Slack war room where ‘Net companies unite to fight Spectre-Meltdown | Ars Technica
When major security vulns go live without warning, competitors suddenly band together.
Meltdown and Spectre created something of a meltdown in the cloud computing world. And by translation, the flaws found in the processors at the heart of much of the world's computing infrastructure have had a direct or indirect effect on the interconnected services driving today's Internet. That is especially true for one variant of the Spectre vulnerability revealed abruptly by Google on January 3, since this particular vulnerability could allow malware running in one user's virtual machine or other "sandboxed" environment to read data from another—or, from the host server itself.
In June 2017, Intel learned of these threats from researchers who kept the information under wraps so hardware and operating system vendors could furiously work on fixes. But while places like Amazon, Google, and Microsoft were clued in early because of their "Tier 1" nature, most smaller infrastructure companies and data center operators were left in the dark until the news broke on January 3. This sent many organizations immediately scrambling: no warning of the exploits came before proof-of-concept code for exploiting them was already public.
browser  bug  cpu  javascript  linux  mac  meltdown_spectre  privacy  security  windows 
2 days ago by rgl7194
Meltdown and Spectre: Good news for AMD users, (more) bad news for Intel | Ars Technica
Windows patches are fixed, but microcode updates are causing even more trouble.
The good news: Microsoft suspended shipping its Spectre and Meltdown Windows patches to owners of AMD systems after some users found that they left their systems unbootable. Microsoft partially lifted the restriction last week, sending the update to newer AMD systems but still leaving the oldest machines unpatched.
Now the company has an update that works on those systems, too. If you're unfortunate enough to have installed the previous, bad update and now have a system that crashes on startup, you'll still have to roll back the bad update before you can install the new one. We've read reports that this is indeed possible, but unfortunately, Microsoft only offers generic guidance on troubleshooting blue screen of death crashes, not any specific steps to fix this specific issue.
browser  bug  cpu  javascript  linux  mac  meltdown_spectre  privacy  security  windows 
2 days ago by rgl7194
Microsoft Resumes Meltdown & Spectre Updates for AMD Devices
Microsoft has resumed the rollout of security updates for AMD devices. The updates patch the Meltdown and Spectre vulnerabilities.
Microsoft released these patches on January 3, but the company stopped the rollout for AMD-based computers on January 9 after users reported crashes that plunged PCs into unbootable states.
After working on smoothing out the problems with AMD, Microsoft announced today it would resume the rollout of five (out of nine) security updates. The five updates are:
browser  bug  cpu  javascript  linux  mac  meltdown_spectre  privacy  security  windows 
2 days ago by rgl7194
PassMark - CPU Performance Comparison
Intel Core m5-6Y54 @ 1.10GHz
Intel Core i5-4250U @ 1.30GHz
Intel Core m3-7Y32 @ 1.10GHz
mac  cpu 
2 days ago by dentarg
PassMark - CPU Performance Comparison
Intel Core m3-6Y30 @ 0.90GHz
Intel Core m5-6Y54 @ 1.10GHz
Intel Core m3-7Y32 @ 1.10GHz
cpu  mac 
2 days ago by dentarg
is a lightweight multi-platform, multi-architecture CPU emulator framework.
cpu  arm  emulator  x86  programming  mips  sparc  68000 
2 days ago by Z303

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