chroma - Chroma is a high performance optical photon simulation for particle physics detectors

Age	Commit message (Collapse)	Author
2011-08-18	Could have run off the end of the array by 1 because the queue counter ↵	Stan Seibert
	points to the next available photon slot.
2011-08-18	Fix bug that caused photons to NAN_ABORT if they hit a triangle	Stan Seibert
	at exactly normal incidence. The plane of incidence was undefined in that case, but should have been the plane normal to polarization vector.
2011-08-18	merge	Anthony LaTorre

2011-08-18	make default camera resolution widescreen. fix checkerboard scene.	Anthony LaTorre

2011-08-17	Start of MiniCLEAN geometry.	Stan Seibert

2011-08-17	add grouper function from the itertools example	Stan Seibert

2011-08-17	event module is no longer part of generator package	Stan Seibert

2011-08-17	Add flag to Simulation() and Geometry.build() to ignore the BVH cache.	Stan Seibert

2011-08-17	Put the temporary ZeroMQ IPC socket file into /tmp directory.	Stan Seibert

2011-08-17	merge	Stan Seibert

2011-08-17	Switch to ZeroMQ for both directions of communication between	Stan Seibert
	the GEANT4 processes. Also handle sending the initial particle vertices from a thread in the main process to avoid possible deadlocking if the vertex queues fill up.
2011-08-17	Switch from multiprocessing.Queue to ZeroMQ push/pull socket for moving ↵	Stan Seibert
	photon information around. Improves LBNE performance from 1.4 to 2 Mphotons/sec.
2011-08-17	move useful bits from view.py into camera.py and get rid of view.py	Anthony LaTorre

2011-08-17	merge	Anthony LaTorre

2011-08-17	import chroma modules from subpackages with import chroma.module_name	Anthony LaTorre

2011-08-16	merge documentation changes	Stan Seibert

2011-08-16	Remove some unused parts of generator/photon.py	Stan Seibert

2011-08-16	merge	Anthony LaTorre

2011-08-16	update geometry.py() documentation	Anthony LaTorre

2011-08-16	Minor fixes to simulation. Default to 11 bit mode, fix print statement.	Stan Seibert

2011-08-16	Preheat GEANT4 process by running a short event at startup	Stan Seibert

2011-08-16	Inexplicable syntax error sitting in our package __init__.py	Stan Seibert

2011-08-16	update documentation for tools.py	Anthony LaTorre

2011-08-16	add document\ation to stl.py.	Anthony LaTorre

2011-08-16	cleanup and add documentation to pi0.py	Anthony LaTorre

2011-08-16	merge	Stan Seibert

2011-08-16	Refactor sim.py into a reusable Simulation class that is called by the	Stan Seibert
	main function(). Also cleanup more event data structure names and add an nphoton value that is preserved even if you prune off all the actual photon vertices.
2011-08-16	merge	Anthony LaTorre

2011-08-16	add linear_extrude() function to make.py. rotate_extrude() now takes the ↵	Anthony LaTorre
	number of rotational steps to extrude instead of the angle step size. updated documention in make.py.
2011-08-16	Seed the numpy random number generator.	Stan Seibert

2011-08-16	Move general utility functions out of sim.py into tools.	Stan Seibert
	The enable_debug_on_crash() function sets the exception hook to start up PDB on uncaught exceptions The @profile_if_possible decorator applies the kernprof.py @profile decorator if available (because of profiling in progress), otherwise does nothing.
2011-08-16	Merge	Stan Seibert

2011-08-16	Epic restructuring of code to switch to a generator-based style of	Stan Seibert
	event creation. Now we have vertex generators (that produce initial particles), photon generators (that create photons to propagate), and a standard data structure using Python class containers and numpy arrays to hand around the code. Also cleaned up some naming of things before they become conventions.
2011-08-16	Draw hits with charge rather than time.	Stan Seibert

2011-08-15	merge	Anthony LaTorre

2011-08-15	woops. dot product should be clamped to [-1.0,1.0].	Anthony LaTorre

2011-08-15	special camera mode	Stan Seibert

2011-08-15	fix nan bug by clamping dot() of surface normal and -photon direction to ↵	Anthony LaTorre
	[0.0,1.0]
2011-08-14	Rewrite the color_solid function in gpu.GPU (and associated CUDA code)	Stan Seibert
	to make it 100x faster. Instead of having each CUDA thread loop over the full triangle list, we give each thread a single triangle and ask it to look up the hit status and color for that triangle. The hit array and color array are small enough (approx 30,000 entries) to fit into the cache, so this goes much faster. Now the event viewer is quite snappy!
2011-08-14	Add a helper function to the ROOT Channel class that will populate 3	Stan Seibert
	arrays with hit information: hit or not, time and charge. Handy for fetching all the hits in an event into numpy arrays.
2011-08-14	Oops, view.py is still in use.	Stan Seibert

2011-08-13	Remove unused render and view files. They have both been superceded by ↵	Stan Seibert
	camera.py.
2011-08-13	A faulty optical process can make the position or direction of the	Stan Seibert
	photon into NaN on the GPU. Now we abort these photons rather than let them lock up the intersect_mesh() method. There is a new history bit (#31) that indicates when a NAN_ABORT has occurred, and this bit is checked for by GPU.propagate(). If set for any of the photons, a warning message is printed. While not as good as preventing the NaN problem in the first place, this at least ensures we are aware of the problem.
2011-08-13	For consistency, we should keep the water index of refraction down to	Stan Seibert
	200 nm, like all the other optical properties. It no longer is a speed benefit, anyway.
2011-08-13	Finally get GEANT4 to stop printing debug information about all the physics ↵	Stan Seibert
	processes
2011-08-12	merge	Anthony LaTorre

2011-08-12	do not check child nodes of a node at which the distance to the bounding box ↵	Anthony LaTorre
	is further than a triangle the ray/photon has already intersected
2011-08-12	Merge	Stan Seibert

2011-08-12	Use an input and output photon queue in order to consolidate all the	Stan Seibert
	photons that didn't die during propagation into the beginning of the list. This speeds up propagation by reducing the number of partially filled CUDA warps on the next propagation step. 2.2 million photons/sec on LBNE!
2011-08-12	merge	Anthony LaTorre