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Add wait() after memcpy in copyParticleVault_d2h() #104

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@coldav coldav commented Jun 11, 2025

In copyParticleVault_d2h() the memcpy into a local variable did not have a wait after it. This meant it may not be complete by the time it is used as an input in the next mempcpy(). This has shown failures when using OpenCL under DPCPP.

In copyParticleVault_d2h() the memcpy into a local variable did not have
a wait after it. This meant it may not be complete by the time it is used
as an input in the next mempcpy(). This has shown failures when using OpenCL
under DPCPP.
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