Infrastructure and Tools

Tools

• Print UCX info
• using ucx_info to find UCP endpoint short/bcopy/zcopy/rndv thresholds
• Malloc hooks
• Performance measurement
• Testing
• UCX environment parameters
• How to get FW syndrome when using DEVX

Infrastructure library (UCS)

• Async
• Configuration parsing
• Memory hooks
• Data structures:
  • Double linked list
  • Single linked queue
  • Fragment list - reordering
  • Memory pool
  • Index/Pointer array
  • SGLIB
• Debugging:
  • Resolving address to file name and line number
  • Handling faults
  • Attaching a debugger to self
  • Logging
  • Assertions (compile-time and run-time)
  • Tracking memory used by different components
  • Profiling
• Statistics
• Fast time measurement
  • Read CPU timer
  • Convert time to sec/msec/usec/nsec
  • Timer queue
  • Timer wheel
• Data types:
  • Callback
  • Class infrastructure
  • Component infrastructure
  • Spinlock
  • Error codes
• System services:
  • Atomic operations
  • Fast bit operations (find first set bit, integer log2)
  • Get hostname
  • Generate UUID
  • Get CPU affinity
  • Read a whole file
  • Get page / huge page size
  • Allocate memory with SystemV
  • Get memory region access flags (from /proc/$$/maps)
  • Modify file flags with fcntl
  • Get process command line
  • Get CPU model, clock frequency
  • Get thread ID