mirror of
https://github.com/smyalygames/FiniteVolumeGPU.git
synced 2025-05-18 14:34:13 +02:00
187 lines
6.9 KiB
Python
187 lines
6.9 KiB
Python
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
This python module implements helpers for IPython / Jupyter and CUDA
|
|
|
|
Copyright (C) 2018 SINTEF ICT
|
|
|
|
This program is free software: you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation, either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
"""
|
|
|
|
import logging
|
|
import gc
|
|
|
|
from IPython.core import magic_arguments
|
|
from IPython.core.magic import line_magic, Magics, magics_class
|
|
import pycuda.driver as cuda
|
|
|
|
from GPUSimulators import Common, CudaContext
|
|
|
|
|
|
@magics_class
|
|
class MagicCudaContext(Magics):
|
|
@line_magic
|
|
@magic_arguments.magic_arguments()
|
|
@magic_arguments.argument(
|
|
'name', type=str, help='Name of context to create')
|
|
@magic_arguments.argument(
|
|
'--blocking', '-b', action="store_true", help='Enable blocking context')
|
|
@magic_arguments.argument(
|
|
'--no_cache', '-nc', action="store_true", help='Disable caching of kernels')
|
|
@magic_arguments.argument(
|
|
'--no_autotuning', '-na', action="store_true", help='Disable autotuning of kernels')
|
|
def cuda_context_handler(self, line):
|
|
args = magic_arguments.parse_argstring(self.cuda_context_handler, line)
|
|
self.logger = logging.getLogger(__name__)
|
|
|
|
self.logger.info("Registering %s in user workspace", args.name)
|
|
|
|
if args.name in self.shell.user_ns.keys():
|
|
self.logger.debug("Context already registered! Ignoring")
|
|
return
|
|
else:
|
|
self.logger.debug("Creating context")
|
|
use_cache = False if args.no_cache else True
|
|
use_autotuning = False if args.no_autotuning else True
|
|
self.shell.user_ns[args.name] = CudaContext.CudaContext(blocking=args.blocking, use_cache=use_cache, autotuning=use_autotuning)
|
|
|
|
# this function will be called on exceptions in any cell
|
|
def custom_exc(shell, etype, evalue, tb, tb_offset=None):
|
|
self.logger.exception("Exception caught: Resetting to CUDA context %s", args.name)
|
|
while (cuda.Context.get_current() != None):
|
|
context = cuda.Context.get_current()
|
|
self.logger.info("Popping <%s>", str(context.handle))
|
|
cuda.Context.pop()
|
|
|
|
if args.name in self.shell.user_ns.keys():
|
|
self.logger.info("Pushing <%s>", str(self.shell.user_ns[args.name].cuda_context.handle))
|
|
self.shell.user_ns[args.name].cuda_context.push()
|
|
else:
|
|
self.logger.error("No CUDA context called %s found (something is wrong)", args.name)
|
|
self.logger.error("CUDA will not work now")
|
|
|
|
self.logger.debug("==================================================================")
|
|
|
|
# still show the error within the notebook, don't just swallow it
|
|
shell.showtraceback((etype, evalue, tb), tb_offset=tb_offset)
|
|
|
|
# this registers a custom exception handler for the whole current notebook
|
|
get_ipython().set_custom_exc((Exception,), custom_exc)
|
|
|
|
|
|
# Handle CUDA context when exiting python
|
|
import atexit
|
|
def exitfunc():
|
|
self.logger.info("Exitfunc: Resetting CUDA context stack")
|
|
while (cuda.Context.get_current() != None):
|
|
context = cuda.Context.get_current()
|
|
self.logger.info("`-> Popping <%s>", str(context.handle))
|
|
cuda.Context.pop()
|
|
self.logger.debug("==================================================================")
|
|
atexit.register(exitfunc)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
@magics_class
|
|
class MagicLogger(Magics):
|
|
logger_initialized = False
|
|
|
|
@line_magic
|
|
@magic_arguments.magic_arguments()
|
|
@magic_arguments.argument(
|
|
'--out', '-o', type=str, default='output.log', help='The filename to store the log to')
|
|
@magic_arguments.argument(
|
|
'--level', '-l', type=int, default=20, help='The level of logging to screen [0, 50]')
|
|
@magic_arguments.argument(
|
|
'--file_level', '-f', type=int, default=10, help='The level of logging to file [0, 50]')
|
|
def setup_logging(self, line):
|
|
if (self.logger_initialized):
|
|
logging.getLogger('GPUSimulators').info("Global logger already initialized!")
|
|
return;
|
|
else:
|
|
self.logger_initialized = True
|
|
|
|
args = magic_arguments.parse_argstring(self.setup_logging, line)
|
|
import sys
|
|
|
|
#Get root logger
|
|
logger = logging.getLogger('GPUSimulators')
|
|
logger.setLevel(min(args.level, args.file_level))
|
|
|
|
#Add log to screen
|
|
ch = logging.StreamHandler()
|
|
ch.setLevel(args.level)
|
|
logger.addHandler(ch)
|
|
logger.log(args.level, "Console logger using level %s", logging.getLevelName(args.level))
|
|
|
|
#Get the outfilename (try to evaluate if Python expression...)
|
|
try:
|
|
outfile = eval(args.out, self.shell.user_global_ns, self.shell.user_ns)
|
|
except:
|
|
outfile = args.out
|
|
|
|
#Add log to file
|
|
logger.log(args.level, "File logger using level %s to %s", logging.getLevelName(args.file_level), outfile)
|
|
|
|
fh = logging.FileHandler(outfile)
|
|
formatter = logging.Formatter('%(asctime)s:%(name)s:%(levelname)s: %(message)s')
|
|
fh.setFormatter(formatter)
|
|
fh.setLevel(args.file_level)
|
|
logger.addHandler(fh)
|
|
|
|
logger.info("Python version %s", sys.version)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
@magics_class
|
|
class MagicMPI(Magics):
|
|
|
|
@line_magic
|
|
@magic_arguments.magic_arguments()
|
|
@magic_arguments.argument(
|
|
'name', type=str, help='Name of context to create')
|
|
@magic_arguments.argument(
|
|
'--num_engines', '-n', type=int, default=4, help='Number of engines to start')
|
|
def setup_mpi(self, line):
|
|
args = magic_arguments.parse_argstring(self.setup_mpi, line)
|
|
logger = logging.getLogger('GPUSimulators')
|
|
if args.name in self.shell.user_ns.keys():
|
|
logger.warning("MPI alreay set up, resetting")
|
|
self.shell.user_ns[args.name].shutdown()
|
|
self.shell.user_ns[args.name] = None
|
|
gc.collect()
|
|
self.shell.user_ns[args.name] = Common.IPEngine(args.num_engines)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
# Register
|
|
ip = get_ipython()
|
|
ip.register_magics(MagicCudaContext)
|
|
ip.register_magics(MagicLogger)
|
|
ip.register_magics(MagicMPI)
|
|
|