Need to interrupt program when calling `main(N=32^2,i=4)`

gdb

gdb --args ~/Software/julia-1.1.0/bin/julia ~/CustomGESV.jl/gpugesv.jl 

GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-80.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /users/home/els11/Software/julia-1.1.0/bin/julia...done.

(gdb) r
Starting program: /users/home/els11/Software/julia-1.1.0/bin/julia /users/home/els11/CustomGESV.jl/gpugesv.jl
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
[New Thread 0x2aaab5b0e700 (LWP 16733)]
[New Thread 0x2aaac6de0700 (LWP 16734)]
[New Thread 0x2aaac6fe1700 (LWP 16735)]
[New Thread 0x2aaac91e2700 (LWP 16736)]
[New Thread 0x2aaacb3e3700 (LWP 16737)]
[New Thread 0x2aaacd5e4700 (LWP 16738)]
[New Thread 0x2aaacf7e5700 (LWP 16739)]
[New Thread 0x2aaad19e6700 (LWP 16740)]
[New Thread 0x2aaade9fb700 (LWP 16747)]
[New Thread 0x2aaaef2d9700 (LWP 16763)]
  1.124136 seconds (365.61 k CPU allocations: 18.026 MiB, 1.23% gc time) (12 GPU allocations: 656 bytes, 35.12% gc time of which 38.04% spent allocating)
 ──────────────────────────────────────────────────────────────────────────
                                   Time                   Allocations      
                           ──────────────────────   ───────────────────────
     Tot / % measured:          3.11s / 8.14%           70.1MiB / 11.6%    

 Section           ncalls     time   %tot     avg     alloc   %tot      avg
 ──────────────────────────────────────────────────────────────────────────
 pooled alloc          12    150ms  59.4%  12.5ms   1.85MiB  22.8%   158KiB
   1 try alloc          8    150ms  59.4%  18.8ms   1.85MiB  22.8%   237KiB
 background task        2    114ms  45.0%  56.9ms   6.27MiB  77.2%  3.13MiB
   scan                 2   6.23μs  0.00%  3.12μs         -  0.01%        -
   reclaim              2   4.97μs  0.00%  2.49μs         -  0.00%        -
 ──────────────────────────────────────────────────────────────────────────

^C

Program received signal SIGINT, Interrupt.
[Switching to Thread 0x2aaab5b0e700 (LWP 16733)]
0x00002aaaab857741 in pthread_kill () from /usr/lib64/libpthread.so.0
Missing separate debuginfos, use: debuginfo-install glibc-2.17-106.el7_2.8.x86_64

(gdb) bt
#0  0x00002aaaab857741 in pthread_kill () from /usr/lib64/libpthread.so.0
#1  0x00002aaaaad7336d in jl_ignore_sigint () at /buildworker/worker/package_linux64/build/src/signal-handling.c:78
#2  signal_listener (arg=<optimized out>) at /buildworker/worker/package_linux64/build/src/signals-unix.c:625
#3  0x00002aaaab852dc5 in start_thread () from /usr/lib64/libpthread.so.0
#4  0x00002aaaabb5dced in clone () from /usr/lib64/libc.so.6

gpugesv.jl

using CuArrays, CUDAdrv, LinearAlgebra, Test

function gpugesv!(A,b)
    A, ipiv = CuArrays.CUSOLVER.getrf!(A)
    CuArrays.CUSOLVER.getrs!('N',A,ipiv,b)
    return A, b
end

function main(;N=32^2, i=25)
    CuArrays.pool_timings!()
    CuArrays.@time for _ in 1:i
        A = rand(N, N)
        b = rand(N)

        A_d = CuArray(A)
        b_d = CuArray(b)
        LAPACK.gesv!(A,b)
        CuArrays.@sync A_d, b_d = gpugesv!(A_d, b_d)

        @test Array(A_d) ≈ A && Array(b_d) ≈ b
    end
    CuArrays.pool_timings()
end

main(N=4,i=2)

main(N=32^2,i=4)