Coverage for pySDC/projects/GPU/run_experiment.py: 52%

1def parse_args(): 

2 import argparse 

3 

4 def cast_to_bool(me): 

5 return False if me in ['False', '0', 0] else True 

6 

7 def str_to_procs(me): 

8 procs = me.split('/') 

9 assert len(procs) == 3 

10 return [int(p) for p in procs] 

11 

12 parser = argparse.ArgumentParser() 

13 parser.add_argument('--useGPU', type=cast_to_bool, help='Toggle for GPUs', default=False) 

14 parser.add_argument( 

15 '--mode', 

16 type=str, 

17 help='Mode for this script', 

18 default=None, 

19 choices=['run', 'plot', 'render', 'plot_series', 'video'], 

20 ) 

21 parser.add_argument('--config', type=str, help='Configuration to load', default=None) 

22 parser.add_argument('--restart_idx', type=int, help='Restart from file by index', default=0) 

23 parser.add_argument('--procs', type=str_to_procs, help='Processes in steps/sweeper/space', default='1/1/1') 

24 parser.add_argument('--res', type=int, help='Space resolution along first axis', default=-1) 

25 parser.add_argument('--dt', type=float, help='(Starting) Step size', default=-1) 

26 parser.add_argument( 

27 '--logger_level', type=int, help='Logger level on the first rank in space and in the sweeper', default=15 

28 ) 

29 parser.add_argument('-o', type=str, help='output path', default='./') 

30 parser.add_argument( 

31 '--distribution', 

32 type=str, 

33 help='distribute tasks', 

34 default='space_first', 

35 choices=['space_first', 'space_major', 'time_first', 'time_major'], 

36 ) 

37 

38 return vars(parser.parse_args()) 

39 

40 

41def run_experiment(args, config, **kwargs): 

42 import pickle 

43 import os 

44 

45 from pySDC.implementations.controller_classes.controller_MPI import controller_MPI 

46 from pySDC.implementations.controller_classes.controller_nonMPI import controller_nonMPI 

47 from pySDC.helpers.stats_helper import filter_stats 

48 

49 type(config).base_path = args['o'] 

50 os.makedirs(f'{args["o"]}/data', exist_ok=True) 

51 

52 description = config.get_description( 

53 useGPU=args['useGPU'], MPIsweeper=args['procs'][1] > 1, res=args['res'], dt=args['dt'], **kwargs 

54 ) 

55 controller_params = config.get_controller_params(logger_level=args['logger_level']) 

56 

57 if args['useGPU']: 

58 from pySDC.implementations.hooks.log_GPU_timings import GPUTimings 

59 

60 controller_params['hook_class'].append(GPUTimings) 

61 

62 # Time-parallel runs need CUDA-aware MPI, which conda-forge's OpenMPI is built with and ships 

63 # switched off: export `OMPI_MCA_opal_cuda_support=true` before launching. Without it the 

64 # point-to-point calls in `controller_MPI` hand MPI a device pointer it will not read. 

65 if config.comms[0].size > 1: 

66 controller = controller_MPI(controller_params, description, config.comms[0]) 

67 prob = controller.S.levels[0].prob 

68 else: 

69 controller = controller_nonMPI(num_procs=1, controller_params=controller_params, description=description) 

70 prob = controller.MS[0].levels[0].prob 

71 

72 u0, t0 = config.get_initial_condition(prob, restart_idx=args['restart_idx']) 

73 

74 config.prepare_caches(prob) 

75 

76 uend, stats = controller.run(u0=u0, t0=t0, Tend=config.Tend) 

77 

78 combined_stats = filter_stats(stats, comm=config.comm_world) 

79 

80 if config.comm_world.rank == config.comm_world.size - 1: 

81 path = f'{config.base_path}/data/{config.get_path()}-stats-whole-run.pickle' 

82 # path = f'/p/project1/ccstma/baumann7/pySDC/pySDC/projects/GPU/data/{config.get_path()}-stats-whole-run.pickle' 

83 with open(path, 'wb') as file: 

84 pickle.dump(combined_stats, file) 

85 print(f'Stored stats in {path}', flush=True) 

86 

87 return uend 

88 

89 

90def plot_experiment(args, config): # pragma: no cover 

91 import gc 

92 import matplotlib.pyplot as plt 

93 

94 type(config).base_path = args['o'] 

95 description = config.get_description() 

96 

97 P = description['problem_class'](**description['problem_params']) 

98 

99 comm = config.comm_world 

100 

101 for idx in range(args['restart_idx'], 9999, comm.size): 

102 try: 

103 fig = config.plot(P=P, idx=idx + comm.rank, n_procs_list=args['procs']) 

104 except FileNotFoundError: 

105 break 

106 

107 path = f'simulation_plots/{config.get_path(ranks=[0,0,0])}-{idx+comm.rank:06d}.png' 

108 fig.savefig(path, dpi=300, bbox_inches='tight') 

109 print(f'{comm.rank} Stored figure {path!r}', flush=True) 

110 

111 if args['mode'] == 'render': 

112 plt.pause(1e-9) 

113 

114 plt.close(fig) 

115 del fig 

116 gc.collect() 

117 

118 

119def plot_series(args, config): # pragma: no cover 

120 import numpy as np 

121 import gc 

122 import matplotlib.pyplot as plt 

123 from pySDC.helpers.plot_helper import figsize_by_journal, setup_mpl 

124 

125 setup_mpl() 

126 

127 fig, axs = plt.subplots( 

128 3, 3, figsize=figsize_by_journal("TUHH_thesis", 1.0, 1.2), sharex=True, sharey=True, layout="compressed" 

129 ) 

130 

131 type(config).base_path = args['o'] 

132 description = config.get_description() 

133 

134 P = description['problem_class'](**description['problem_params']) 

135 

136 idxs = np.linspace(0, config.num_frames * 0.9, 9, dtype=int) 

137 

138 for idx, ax in zip(idxs, axs.flatten(), strict=True): 

139 try: 

140 _fig = config.plot(P=P, idx=idx, n_procs_list=args['procs'], ax=ax) 

141 except FileNotFoundError: 

142 break 

143 

144 plt.close(_fig) 

145 del _fig 

146 gc.collect() 

147 

148 for ax in axs.flatten(): 

149 if ax != axs[-1, 0]: 

150 ax.set_xlabel('') 

151 ax.set_ylabel('') 

152 

153 path = f'plots/{config.get_path(ranks=[0,0,0])}-series.pdf' 

154 fig.savefig(path, dpi=300) 

155 print(f'Stored figure {path!r}', flush=True) 

156 plt.show() 

157 

158 

159def make_video(args, config): # pragma: no cover 

160 comm = config.comm_world 

161 if comm.rank > 0: 

162 return None 

163 

164 import subprocess 

165 

166 path = f'simulation_plots/{config.get_path(ranks=[0,0,0])}-%06d.png' 

167 path_target = f'videos/{args["config"]}.mp4' 

168 

169 cmd = f'ffmpeg -i {path} -pix_fmt yuv420p -r 9 -s 2048:1536 -y {path_target}'.split() 

170 

171 subprocess.run(cmd) 

172 print(f'Made video {path_target!r}') 

173 

174 

175if __name__ == '__main__': 

176 from pySDC.projects.GPU.configs.base_config import get_config 

177 

178 args = parse_args() 

179 

180 config = get_config(args) 

181 

182 if args['mode'] == 'run': 

183 run_experiment(args, config) 

184 elif args['mode'] in ['plot', 'render']: # pragma: no cover 

185 plot_experiment(args, config) 

186 elif args['mode'] == 'plot_series': # pragma: no cover 

187 plot_series(args, config) 

188 elif args['mode'] == 'video': # pragma: no cover 

189 make_video(args, config)