Thorns

A thorn consists of a subdirectory of an arrangement containing four administrative files:

interface.ccl

the Cactus interface, which defines the grid functions, variables, etc. See E2.2.

param.ccl

the parameters introduced by this thorn, and the parameters needed from other thorns. See E2.3.

schedule.ccl

scheduling information for routines called by the Flesh. See E2.4.

configuration.ccl

configuration options for the thorn. See E2.5.

Thorns can also contain

• a subdirectory called src, which should hold source files and compilation instructions for the thorn
• a subdirectory src/include for include files
• a README containing a brief description of the thorn
• a doc directory for documentation
• a par directory for example parameter files
• a test subdirectory may also be added, to hold the thorn's test suite. See B9.5 for details.