Bureaucrats, cc_docs_admin, cc_staff
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Standard software environments: Difference between revisions
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We also installed a more recent version of the [https://en.wikipedia.org/wiki/GNU_C_Library GNU C Library], which introduces optimizations in some mathematical functions. This has increased the requirement on the version of the Linux Kernel (see below). | We also installed a more recent version of the [https://en.wikipedia.org/wiki/GNU_C_Library GNU C Library], which introduces optimizations in some mathematical functions. This has increased the requirement on the version of the Linux Kernel (see below). | ||
=== Change in the compatibility layer === | === Change in the compatibility layer === <!--T:11--> | ||
Another major change introduced in the <code>2020</code> release is a switch between two tools for our ''compatibility layer''. This is a layer of the software hierarchy which we provide to isolate it from the underlying operating system. For example, this ensures that our software packages will work whether it is run on CentOS, Ubuntu, or Fedora systems. For the <code>2016.4</code> and <code>2018.3</code> versions, we used the [https://en.wikipedia.org/wiki/Nix_package_manager Nix package manager], while for the <code>2020</code> version, we use [https://wiki.gentoo.org/wiki/Project:Prefix Gentoo Prefix]. | Another major change introduced in the <code>2020</code> release is a switch between two tools for our ''compatibility layer''. This is a layer of the software hierarchy which we provide to isolate it from the underlying operating system. For example, this ensures that our software packages will work whether it is run on CentOS, Ubuntu, or Fedora systems. For the <code>2016.4</code> and <code>2018.3</code> versions, we used the [https://en.wikipedia.org/wiki/Nix_package_manager Nix package manager], while for the <code>2020</code> version, we use [https://wiki.gentoo.org/wiki/Project:Prefix Gentoo Prefix]. | ||
=== Change in kernel requirement === | === Change in kernel requirement === <!--T:12--> | ||
Versions <code>2016.4</code> and <code>2018.3</code> required a Linux kernel version 2.6.32 or more recent. This supported CentOS versions starting at CentOS 6. With the <code>2020</code> version, we require a Linux kernel 3.10 or better. This means it no longer supports CentOS 6, but requires CentOS 7 instead. Other distributions usually have kernels which are much more recent, so you probably do not need to change your distribution if you are using this standard environment on something other than CentOS. | Versions <code>2016.4</code> and <code>2018.3</code> required a Linux kernel version 2.6.32 or more recent. This supported CentOS versions starting at CentOS 6. With the <code>2020</code> version, we require a Linux kernel 3.10 or better. This means it no longer supports CentOS 6, but requires CentOS 7 instead. Other distributions usually have kernels which are much more recent, so you probably do not need to change your distribution if you are using this standard environment on something other than CentOS. | ||