Stream: git-wasmtime

Topic: wasmtime / issue #8607 pooling allocator should take virt...

Wasmtime GitHub notifications bot (May 13 2024 at 19:14):

matsbror added the bug label to Issue #8607.

Wasmtime GitHub notifications bot (May 13 2024 at 19:14):

matsbror opened issue #8607:

Thanks for filing a bug report! Please fill out the TODOs below.

Test Case

Hello wasi http

Steps to Reproduce

These steps fail on Ubuntu 24.04/riscv64 on VisionFive 2 and on Ubuntu 18.04/aarch64 on Nvidia Jetson Nano.

• Build the hello wasi http code as described here
• run wasmtime serve target/wasm32-wasi/debug/hello_wasi_http.wasm

Expected Results

I would have expected the tutorial to work as described.

Actual Results

jetson@360lab-nano2:~/docker/hello-wasi-http$ wasmtime serve -O pooling-allocator=y target/wasm32-wasi/debug/hello_wasi_http.wasm
Error: failed to create memory pool mapping                                                                                                                                                                                                     Caused by:
    0: mmap failed to reserve 0x5dc80000000 bytes
    1: Cannot allocate memory (os error 12)

When running without pooling allocator it works:

jetson@360lab-nano2:~/docker/hello-wasi-http$ wasmtime serve -O pooling-allocator=n target/wasm32-wasi/debug/hello_wasi_http.wasm
Serving HTTP on http://0.0.0.0:8080/

Versions and Environment

Wasmtime version or commit: 21.0

Operating system:

• For RISCV64 Ubuntu 24.04 downloaded from here
• For Aarch64 Ubuntu 18.04 downloaded from here

Architecture:

• Riscv64
• Aarch64

Extra Info

I guess there should be a way to detect the virtual address size as it seems to be around 39 bits in these architectures.

Wasmtime GitHub notifications bot (May 13 2024 at 20:34):

alexcrichton commented on issue #8607:

In lieu of directly probing address space limitations I've opted to do something slightly different in https://github.com/bytecodealliance/wasmtime/pull/8610 which probes for a large reservation to succeed before attempting another one for the pooling allocator.

Wasmtime GitHub notifications bot (May 14 2024 at 03:13):

matsbror commented on issue #8607:

Thanks. Will this also help spin, which uses wasmtime as library? The same error occurs there.

Wasmtime GitHub notifications bot (May 14 2024 at 14:48):

alexcrichton commented on issue #8607:

Not directly, no, but I can propose the same change on Spin to have the same effect

Wasmtime GitHub notifications bot (May 14 2024 at 15:27):

alexcrichton closed issue #8607:

Thanks for filing a bug report! Please fill out the TODOs below.

Test Case

Hello wasi http

Steps to Reproduce

These steps fail on Ubuntu 24.04/riscv64 on VisionFive 2 and on Ubuntu 18.04/aarch64 on Nvidia Jetson Nano.

• Build the hello wasi http code as described here
• run wasmtime serve target/wasm32-wasi/debug/hello_wasi_http.wasm

Expected Results

I would have expected the tutorial to work as described.

Actual Results

jetson@360lab-nano2:~/docker/hello-wasi-http$ wasmtime serve -O pooling-allocator=y target/wasm32-wasi/debug/hello_wasi_http.wasm
Error: failed to create memory pool mapping                                                                                                                                                                                                     Caused by:
    0: mmap failed to reserve 0x5dc80000000 bytes
    1: Cannot allocate memory (os error 12)

When running without pooling allocator it works:

jetson@360lab-nano2:~/docker/hello-wasi-http$ wasmtime serve -O pooling-allocator=n target/wasm32-wasi/debug/hello_wasi_http.wasm
Serving HTTP on http://0.0.0.0:8080/

Versions and Environment

Wasmtime version or commit: 21.0

Operating system:

• For RISCV64 Ubuntu 24.04 downloaded from here
• For Aarch64 Ubuntu 18.04 downloaded from here

Architecture:

• Riscv64
• Aarch64

Extra Info

I guess there should be a way to detect the virtual address size as it seems to be around 39 bits in these architectures.

Last updated: Oct 23 2024 at 20:03 UTC