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pranithon Do not taunt happy fun branch predictor

Great investigative work! The stack structure you refer to here is called the Return Address Stack (RAS).

pranithon World’s first octopus farm stirs ethical debate

Even cows are extremely intelligent and emotional animals. Did you stop eating them?

pranithon Beating the L1 cache with value speculation

Very well explained.. its a really interesting idea.

pranithon Jim Keller to Depart Intel

Wishing him good luck and healthy life.

pranithon Intel and ARM Performance Characteristics for S3 Compatible Object Storage

Graviton2 is using Ares core IP from ARM.

pranithon Chris Lattner to Lead SiFive Platform Engineering Team

Looking forward to seeing a high performance dev-board from SiFive.

pranithon AWS Graviton2

True, but the design is licensed from ARM and tuned to AWS's requirements.

pranithon AWS Graviton2

If they are good enough for internal use, they should be good enough for public use. Not really sure what is stopping them from exposing it to the public... I am sure there is _some_ demand for it.

pranithon AWS Graviton2

I am sure the software is multi-arch ready but I wonder if they are evaluating ARM servers either for use internally or to launch in the cloud...

pranithon AWS Graviton2

I wonder when and how Azure and Google Cloud will compete with AWS in this market.

They could buy ARM processors available in the market, but I doubt they will be able to get them as cheap as AWS who builds their own.

pranithon Is Arm ready for server dominance?

Would you please tell what the specifications are and how much it cost you?

pranithon Firefox moving to 4 week releases

The long term extended support release might be a suitable option for you in that case...

https://www.mozilla.org/en-US/firefox/enterprise/

pranithon MSVC's implementation of the C++ Standard Library

Ah, forgot Amazon. They are a sink for OSS. Apple, it appears, is much better than I knew.

pranithon MSVC's implementation of the C++ Standard Library

Microsoft has come a long way lately when it comes to open source. Apple seems to be the only major company that is still not an enthusiastic participant.

pranithon Windows Internals, 7th Edition

For those having trouble accessing the page:

https://web.archive.org/web/20170512030315/http://www.alex-i...

pranithon Windows 10 on ARM

> Properly coded applications will be using some form of sync primitives to shared data structures. So, when the emulator hits a LOCK xxx instruction

This is not always true. See [1] for an example. Because of the semantics of the x86 memory model a sequentially consistent load does not generate a lock'd instruction. When such loads are translated to ARM64, you need to introduce barriers or use a ldacq instruction.

[1] https://www.cl.cam.ac.uk/~pes20/cpp/cpp0xmappings.html

pranithon Windows 10 on ARM

Since there are no publicly available details, I would guess this is solved in hardware. The Qualcomm processor can be made to support stronger memory model for translated instructions similar to how the Power processors support strong-access ordering for efficient x86 emulation[1].

[1] https://www.google.com/patents/WO2012101538A1?cl=en

pranithon KernelMemorySanitizer: detector of uninitialized memory uses in the Linux kernel

Google is putting quite some effort to get Clang to build the linux kernel. Once it is at that stage, they can stop depending on gcc in AOSP. They already use clang for everything but the kernel.

pranithon GNU GLOBAL source code tagging system

And the latest available version on the most recent ubuntu and debian releases is... 5.7.1 from 6 years ago!!

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=574947

https://bugs.launchpad.net/ubuntu/+source/global/+bug/127502...

pranithon AMD Launches Mobile Kaveri APUs

There were plans not to disable the on-chip GPU and use it as a power saving feature. When the gpu work load can be handled by the on-chip GPU, disabling the external GPU saves you quite a lot of energy.