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AMD Ryzen Threadripper PRO 5965WX Performance On Linux

Phoronix - Mon, 08/08/2022 - 21:00
Earlier this year AMD announced the Ryzen Threadripper PRO 5000 WX series but initially was limited to Lenovo workstations. Earlier this summer it was then announced the Threadripper PRO 5000 WX series would be heading to more system integrators and then the DIY market. Well, finally, these Zen 3 Threadripper chips are heading out to the DYI market and today the review embargo lifts. AMD recently sent over a Ryzen Threadripper PRO 565WX for my Linux testing at Phoronix and here is my initial review and performance benchmarks for this Zen 3 24-core / 48-thread HEDT chip.

AMD "Automatic Mode Transition" Comes For Lenovo ThinkPad Laptops With Linux 6.0

Phoronix - Mon, 08/08/2022 - 18:50
AMD Automatic Mode Transition (AMT) is a new feature wired up for Ryzen-powered ThinkPad laptops that is being introduced with the Linux 6.0 kernel...

Habana Labs Gaudi2 Support Leads The Linux 6.0 Char/Misc Changes

Phoronix - Mon, 08/08/2022 - 17:31
The "char/misc" changes were merged a few days back for the Linux 6.0 kernel with this pull being the rather "random catch-all" area of the kernel for drivers not fitting within other subsystems. Most notable with the char/misc updates for Linux 6.0 is introducing support for Intel's Habana Labs Gaudi2...

OpenBLAS 0.3.21 Brings Support For Newer Arm CPUs, More Optimizations

Phoronix - Mon, 08/08/2022 - 17:17
OpenBLAS as the high performance, open-source BLAS / LAPACK implementation debuted a new version on Sunday with more CPU optimizations and expanded processor coverage...

IBM Power Improvements For Linux 6.0 Support The PowerVM Platform KeyStore

Phoronix - Mon, 08/08/2022 - 17:02
The IBM Power CPU architecture updates have been merged for the in-development Linux 6.0 kernel...

Fix file permission errors on Linux

opensource.com - Mon, 08/08/2022 - 15:00
Fix file permission errors on Linux Seth Kenlon Mon, 08/08/2022 - 03:00 Register or Login to like Register or Login to like

If you're sharing files between two users over the network or "sneaker net" (saving a file to a hard drive and copying it to a computer), you may encounter permission errors when you try to read or write the file. Even if you understand the concept of file permissions, you may not know exactly how to diagnose the problem or solve it. I used to perform data migration as a service, so I've run into my fair share of permission errors and ownership conflicts. Here's how I fix them fast.

1. Determine the correct user

Before you can fix a permission error, you must determine who requires permission. You might think you already know that, but what you may not realize is that the user name isn't the most definitive attribute of user identity. Your computer doesn't see you as a person so much as it sees you as a number. To learn your number, take a look at your user ID:

$ id --user
10052. Get the current owner

Next, determine the owner of the file you're unable to interact with. Because there's a file permission problem happening, you may need to use the sudo command to see the information about the file:

$ sudo ls --numeric-uid-gid
-rw------- 1 1000 100  23041 Aug  2 05:26 bar
-rw------- 1 1000 100  54281 Aug  2 04:58 baz
-rw------- 1 1000 100    822 Aug  2 08:19 foo

In this example, the user owning the files is identified as user ID 1000, and that's why user ID 1005 can't interact with them. Worse yet, the files are marked as readable and writable only by the user that owns them, so not even members of the same group can interact with the files.

More Linux resources Linux commands cheat sheet Advanced Linux commands cheat sheet Free online course: RHEL technical overview Linux networking cheat sheet SELinux cheat sheet Linux common commands cheat sheet What are Linux containers? Our latest Linux articles 3. Change permissions to match

You know the user requiring permission, so you can change the current owner to match your current user:

$ sudo chown 1005 foo

You can also grant members of your group, and possibly other users on the system, access to the files by changing the file mode. For instance, to maintain read and write permissions (7) while granting read permissions (4) to the group and any other user:

$ sudo chmod 744 fooLearn more

File permissions can seem tricky when you're not comfortable with them. For more information on how file ownership works, read Introduction to chown. For more information on how file permissions work, read Introduction to chmod.

Don't let file permissions slow you down. Here's how to manage them on Linux and macOS.

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