async_menagerie deadlocks on Intel Iris Pro / Mac OS X

[c0gent]

Sub-issue (and continuation) of: #65

[c0gent]

@michael-p: There might not be anything we can do about this but I want to leave this issue open in case anything else similar comes along.

[norru]

@c0gent Just built ocl from source for the first time, going through the examples, async_menagerie seem to stall. (NVIDIA / Linux.)

ocl$ cargo run --release --example async_menagerie
    Finished release [optimized] target(s) in 0.11s                                                                                                             
     Running `/home/norru/Projects/3rdParty/ocl/target/release/examples/async_menagerie`
Platform: NVIDIA CUDA
Device: NVIDIA Corporation GeForce GTX 660
Creating and enqueuing tasks...
Task [0] (complex): Buffer initialized.
Task [1] (complex): Buffer initialized.
Task [2] (simple): Buffer initialized.
Task [3] (simple): Buffer initialized.
Task [4] (simple): Buffer initialized.
Task [0] (complex): Verify successful: 424002 values correct.
Task [2] (simple): Verify successful: 304586 values correct.
Task [6] (complex): Buffer initialized.
Task [5] (simple): Buffer initialized.
Task [7] (simple): Buffer initialized.
Task [3] (simple): Verify successful: 37124 values correct.
Task [8] (simple): Buffer initialized.
Task [1] (complex): Verify successful: 430705 values correct.
Task [4] (simple): Verify successful: 511644 values correct.
Task [9] (complex): Buffer initialized.
Task [5] (simple): Verify successful: 49614 values correct.
Buffer pool is now full.
Waiting on 11 tasks to complete...
Task [0]: Complete.
Task [10] (complex): Buffer initialized.
Task [7] (simple): Verify successful: 119050 values correct.
Task [9] (complex): Verify successful: 193709 values correct.
Task [8] (simple): Verify successful: 182238 values correct.
Task [6] (complex): Verify successful: 376147 values correct.
Task [10] (complex): Verify successful: 367462 values correct.
^C
ocl$ cargo run --release --example device_check
   Compiling ocl v0.19.1 (/home/norru/Projects/3rdParty/ocl/ocl)                                                                                                
    Finished release [optimized] target(s) in 3.56s                                                                                                             
     Running `/home/norru/Projects/3rdParty/ocl/target/release/examples/device_check`
Platform [0]: NVIDIA CUDA
Device [0]: NVIDIA Corporation GeForce GTX 660
    Out-of-order MW/Async-CB:       <success>
    Out-of-order MW/Async-CB+AHP:   <success>
    Out-of-order MW/ASync+CB/MR:    <success>
    In-order MW/ASync+CB:           <success>
    Out-of-order MW/ELOOP:          <success>
    Out-of-order MW/ELOOP+CB:       <success>
    In-order RwVec Multi-thread:    <success>
Platform [1]: Portable Computing Language
Device [0]: GenuineIntel pthread-Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
    Out-of-order MW/Async-CB:       <success>
    Out-of-order MW/Async-CB+AHP:   <success>
    Out-of-order MW/ASync+CB/MR:    <success>
    In-order MW/ASync+CB:           <success>
    Out-of-order MW/ELOOP:          <success>
    Out-of-order MW/ELOOP+CB:       <success>
    In-order RwVec Multi-thread:    <success>
All checks complete.

ocl$ uname -a
Linux GBWWSRUNUBWS02 4.15.0-38-generic #41-Ubuntu SMP Wed Oct 10 10:59:38 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

norru@GBWWSRUNUBWS02:~/Projects/3rdParty/ocl/ocl$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"

[norru]

Here's the clinfo from my box.

clinfo.log

[c0gent]

I've noticed the same issue but haven't had time to investigate. I'll try to look into this as soon.