malloc for large allocations

malloc for large allocations

[bernardwidynski]

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I have a computer with 128 gigabytes of memory.
However, when I try to malloc memory, it only works if I malloc less than 64 gigabytes.
Is there some parameter I could change that would allow me to malloc more than 64 gigabytes.
Thanks,
Bernard Widynski

Re: malloc for large allocations

[Jonathan Wakely]

On Thu, 2 Mar 2023 at 16:36, bernardwidynski--- via Gcc-help
<gcc-help@gcc.gnu.org> wrote:
>
> I have a computer with 128 gigabytes of memory.
> However, when I try to malloc memory, it only works if I malloc less than 64 gigabytes.
> Is there some parameter I could change that would allow me to malloc more than 64 gigabytes.

This has nothing to do with GCC. malloc is provided by the C library,
not by GCC.

Re: malloc for large allocations

[Xi Ruoyao]

On Thu, 2023-03-02 at 16:35 +0000, bernardwidynski--- via Gcc-help wrote:
> I have a computer with 128 gigabytes of memory.
> However, when I try to malloc memory, it only works if I malloc less than 64 gigabytes.
> Is there some parameter I could change that would allow me to malloc more than 64 gigabytes.

malloc is not provided by GCC.  Ask the developer of your libc.

-- 
Xi Ruoyao <xry111@xry111.site>
School of Aerospace Science and Technology, Xidian University