Implementing rational clock crossing in a distributed system

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a computing device to cause the computing device to:

• estimate a timing budget for at least one path during rational clock crossing;
• maintain at least a portion of data associated with the rational clock crossing in a first clock domain for a given number of cycles related to the estimated timing budget until a subsequent capturing edge in a second clock domain;
• skip the subsequent capturing edge in the second clock domain upon a determination that the subsequent capturing edge is less than the given number of cycles related to the estimated timing budget from at least one given launching edge in the at least one path;
• and
• perform, in the at least one path and in connection with skipping the subsequent capturing edge, at least one timing adjustment from one or more launching latches in the first clock domain to one or more capturing latches in the second clock domain.

A computer-implemented method comprising:

• estimating a timing budget for at least one path during rational clock crossing;
• maintaining at least a portion of data associated with the rational clock crossing in a first clock domain for a given number of cycles related to the estimated timing budget until a subsequent capturing edge in a second clock domain;
• skipping the subsequent capturing edge in the second clock domain upon a determination that the subsequent capturing edge is less than the given number of cycles related to the estimated timing budget from at least one given launching edge in the at least one path;
• and
• performing, in the at least one path and in connection with skipping the subsequent capturing edge, at least one timing adjustment from one or more launching latches in the first clock domain to one or more capturing latches in the second clock domain;
• wherein the method is carried out by at least one computing device.