Methods for Interacting with the CD Framework and Tuner

Functions
float	cd::CDHandle::GetErrorProbability (SysErrT error_type, uint error_num,)
	Ask the CD framework to estimate error/fault rate. More...
float	cd::CDHandle::RequireErrorProbability (SysErrT error_type, uint error_num, float probability, bool fail_over=true)
	Request the CD framework to reach a certain error/failure probability. More...

Detailed Description

Todo:

What about specifying leniant communication-related errors for relaxed-CDs context?

Function Documentation

float cd::CDHandle::GetErrorProbability	(	SysErrT	error_type,
		uint	error_num
	)

Ask the CD framework to estimate error/fault rate.

Each CD will experience a certain rate of failure/error for different failure/error mechanisms. These rates depend on the system, the duration of the CD, its memory footprint, etc. The CD framework can estimate the expected rate of each fault mechanism given its knowledge of the CD and system properties.

Returns

probability that the queried number of error/failure of the type queried will occur during the execution of this CD.

Note

Should this be some rate instead? Seems like it would be easier for the programmer to deal with number and probability, but is it?

Todo:

Decide on rate vs. number+probability

Parameters

[in]	error_type	Type of
	error_num	error/failure queried [in] Number of errors/failures queried.

float cd::CDHandle::RequireErrorProbability	(	SysErrT	error_type,
		uint	error_num,
		float	probability,
		bool	fail_over = true
	)

Request the CD framework to reach a certain error/failure probability.

Each CD will experience a certain rate of failure/error for different failure/error mechanisms. These rates depend on the system, the duration of the CD, its memory footprint, etc. The CD framework may be able to apply automatic resilience techniques, such as replication, to ensure certain errors/failures will be tolerated (or simply) detected.

Returns

probability that at least error_num errors/failurse of the type queried will occur during the execution of this CD, after the automatic techniques are applied. Should be less than or equal to requested probability if successful.

Note

Should this be some rate instead? Seems like it would be easier for the programmer to deal with number and probability, but is it?

Todo:

Decide on rate vs. number+probability

Parameters

[in]	error_type	Type of error/failure queried.
[in]	error_num	Number of errors/failures queried.
[in]	probability	Requested maximum probability of num_errors errors/failures not being detected or even occurring during CD execution.
[in]	fail_over	Should redundancy be added just to detect the specified error type (false) or should enough redundancy be added to tolerate the error (fail-over/forward-error-correction/...)