About exploring TLS parallelism

As mentioned in some papers, TLS ( Thread-level speculative)
parallelism is an important complementarity to the ILP.
In my view, the TLS parallelism exploration is involved with those
following topics:
program partition policy;
thread spawning policy;
value/branch prediction, memory violation detect technologies, etc 
those are used in TLS to help with maximize independent thread;
cost model to drive the TLS considering many facet of overhead such as
synchronization,communication, thread size, cost of misspeculation;
mechanism for misspeculation, eg. thread restart, squash...


I'm a green hand in this field and search for help.
Could anyone point out the misunderstanding of TLS in my opinion and
provide me with a clear picture of the TLS trend or recommend some
good implementations/survey and open research project of TLS ?
Which topic in the above is worthy of studying ?
And, does research on TLS has a future or it just has been expired as
too many works on it?


Thanks all!
[I'd think a lot of the VLIW trace scheduling work would be
relevant here. -John]

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