TurboFFT

Run the following command to generate FFT kernel and compile

mkdir build
./compile.sh

TurboFFT

Usage: program [options]
Options:
  --logN <value>       Set logN to <value>, which determines N as 2^<value>.
  --bs <value>         Set block size to <value>.
  --bs_end <value>     Set block size end to <value> (for iterative tests).
  --bs_gap <value>     Set block size gap to <value> (for iterative tests).
  --if_profile <0|1>   Enable (1) or disable (0) profiling.
  --if_verify <0|1>    Enable (1) or disable (0) verification.
  --if_bench <0|1|2|11|12> Enable (1) or disable (0) benchmarking.
                           (2) for logBS + logN = 28.
                           (11) for cuFFT.
                           (12) for cuFFT &  logBS + logN = 28.
  --if_ft <0|1>        Enable (1) or disable (0) fault tolerance.
  --if_err <0|1>       Enable (1) or disable (0) error injection.
  --datatype <type>    0 for FP32, 1 for FP64.
  --thread_bs <value>  Set batches per block to <value>.
  --gpu <str>          Set GPU spec.
  -h, --help               Display this help message and exit.

Profile a $16 \times 2^{10}$ FFT computation

cd build
./turbofft 10 16 1 0 0 

Verify a $16 \times 2^{10}$ FFT computation

cd build
./turbofft 10 16 0 1 0 

Benchmark turboFFT

cd build
./turbofft 0 0 0 0 1 

Set your kernel parameters!

logN	Kernel Launch Times	logN1	logN2	logN3	BS1	BS2	BS3	n1	n2	n3
7	1	7	0	0	1	0	0	8	0	0
8	1	8	0	0	1	0	0	16	0	0
9	1	9	0	0	1	0	0	8	0	0
10	1	10	0	0	1	0	0	8	0	0
11	1	11	0	0	1	0	0	8	0	0
12	1	12	0	0	1	0	0	16	0	0
13	1	13	0	0	1	0	0	32	0	0
14	2	7	7	0	16	16	0	8	8	0
15	2	7	8	0	16	8	0	8	8	0
23	3	7	8	8	32	16	16	16	16	16
24	3	8	8	8	16	16	16	16	16	16

Some parameters combination may not work, for example you should make sure $BS_i \times logN_i \leq max_shared_memory_size$

1. You can config your own kernel parameters by edit the parameter file in include/param/param_A100_double2.csv
2. Run the following command to regenerate the kernel code and compile again

./compile.sh

Fault Tolerance mode and Error Injection Mode

1. Modify the code generator fft_codegen.py arguments

Parameter	Type	Default Value	Description
if_ft	int	0	Flag to indicate fault detection (0 for False, 1 for True)
if_err_injection	int	0	Flag to indicate error injection (0 for False, 1 for True)
err_smoothing	int	1000	Error smoothing parameter
err_inj	int	100	Error injection value
err_threshold	float	1e-3	Error threshold
datatype	str	"double2"	Data type with a default value of "double2"

1. Run the following command to

cd include/code_gen/scripts
python fft_codegen.py --datatype="double2" --if_ft=1  --if_err_injection=1 

We currently only support radix-2